# publications

- "Origins of clustered frequency combs in Kerr microresonators," N. L. B. Sayson, H. Pham, K. E. Webb, V. Ng, L. S. Trainor, H. G. L. Schwefel, S. Coen, M. Erkintalo, and S. G. Murdoch,
*Optics Letters*, vol. 43, iss. 17, pp. 4180-4183. (2018) | www - "Prism coupling of high-Q terahertz whispering-gallery-modes over two octaves from 0.2 THz to 1.1 THz," D. W. Vogt, A. H. Jones, H. G. L. Schwefel, and R. Leonhardt,
*Optics Express*, vol. 26, iss. 24, pp. 31190-31198. (2018) | www - "Towards terahertz detection and calibration through spontaneous parametric down-conversion in the terahertz idler-frequency range generated by a 795 nm diode laser system," V. V. Kornienko, G. K. Kitaeva, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel,
*APL Photonics*, vol. 3, iss. 5, p. 051704. (2018) | www - "Selective Coupling Enhances Harmonic Generation of Whispering-Gallery Modes," L. S. Trainor, F. Sedlmeir, C. Peuntinger, and H. G. L. Schwefel,
*Physical Review Applied*, vol. 9, iss. 2, p. 024007. (2018) | www - "Sensitivity limits of millimeter-wave photonic radiometers based on efficient electro-optic upconverters," G. S. Botello, F. Sedlmeir, A. Rueda, K. A. Abdalmalak, E. R. Brown, G. Leuchs, S. Preu, D. Segovia-Vargas, D. V. Strekalov, L. E. G. Muñoz, and H. G. L. Schwefel,
*Optica*, vol. 5, iss. 10, pp. 1210-1219. (2018) | www - "Polarization-Selective Out-Coupling of Whispering-Gallery Modes," F. Sedlmeir, M. R. Foreman, U. Vogl, R. Zeltner, G. Schunk, D. V. Strekalov, C. Marquardt, G. Leuchs, and H. G. L. Schwefel,
*Physical Review Applied*, vol. 7, iss. 2, p. 024029. (2017) | www - "Optical microcavities: new understandings and developments," L. Ge, L. Feng, and H. G. L. Schwefel,
*Photonics Research*, vol. 5, iss. 6, p. om1-om3. (2017) | www - "Dielectric tuning and coupling of whispering gallery modes using an anisotropic prism," M. R. Foreman, F. Sedlmeir, H. G. L. Schwefel, and G. Leuchs,
*JOSA B*, vol. 33, iss. 11, pp. 2177-2195. (2016) | www - "Nonlinear and quantum optics with whispering gallery resonators," D. V. Strekalov, C. Marquardt, A. B. Matsko, H. G. L. Schwefel, and G. Leuchs,
*Journal of Optics*, vol. 18, iss. 12, p. 123002. (2016) - "Frequency tuning of single photons from a whispering-gallery mode resonator to MHz-wide transitions," G. Schunk, U. Vogl, F. Sedlmeir, D. V. Strekalov, A. Otterpohl, V. Averchenko, H. G. L. Schwefel, G. Leuchs, and C. Marquardt,
*Journal of Modern Optics*, pp. 1-16. (2016) | www - "Efficient microwave to optical photon conversion: an electro-optical realization," A. Rueda, F. Sedlmeir, M. C. Collodo, U. Vogl, B. Stiller, G. Schunk, D. V. Strekalov, C. Marquardt, J. M. Fink, O. Painter, G. Leuchs, and H. G. L. Schwefel,
*Optica*, vol. 3, iss. 6, pp. 597-604. (2016) | www - "Maximization of the optical intra-cavity power of whispering-gallery mode resonators via coupling prism," G. A. Santamaría-Botello, G. L. E. Muñoz, F. Sedlmeir, S. Preu, D. Segovia-Vargas, A. K. Abdalmalak, L. S. Romano, G. A. Lampérez, S. Malzer, G. H. Döhler, H. G. L. Schwefel, and H. B. Weber,
*Optics Express*, vol. 24, iss. 23, pp. 26503-26514. (2016) | www - "Dielectric Rod Waveguide Antenna as THz Emitter for Photomixing Devices," A. Rivera-Lavado, S. Preu, L. E. Garcia-Munoz, A. Generalov, J. Montero-de-Paz, G. Dohler, D. Lioubtchenko, M. Mendez-Aller, F. Sedlmeir, M. Schneidereit, H. G. L. Schwefel, S. Malzer, D. Segovia-Vargas, and A. V. Raisanen,
*IEEE Transactions on Antennas and Propagation*, vol. 63, iss. 3, pp. 882-890. (2015) - "A chaotic approach clears up imaging," H. G. L. Schwefel and H. E. Türeci,
*Science*, vol. 348, iss. 6231, pp. 189-190. (2015) | www - "Highly efficient generation of single-mode photon pairs from a crystalline whispering-gallery-mode resonator source," M. Förtsch, G. Schunk, J. U. Fürst, D. Strekalov, T. Gerrits, M. J. Stevens, F. Sedlmeir, H. G. L. Schwefel, S. W. Nam, G. Leuchs, and C. Marquardt,
*Physical Review A*, vol. 91, iss. 2, p. 023812. (2015) | www - "Intracavity Squeezing Can Enhance Quantum-Limited Optomechanical Position Detection through Deamplification," V. Peano, H. G. L. Schwefel, C. Marquardt, and F. Marquardt,
*Physical Review Letters*, vol. 115, iss. 24, p. 243603. (2015) | www - "Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors," M. Förtsch, T. Gerrits, M. J. Stevens, D. Strekalov, G. Schunk, J. U. Fürst, U. Vogl, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, S. W. Nam, and C. Marquardt,
*Journal of Optics*, vol. 17, iss. 6, p. 065501. (2015) | www - "Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source," G. Schunk, U. Vogl, D. V. Strekalov, M. Förtsch, F. Sedlmeir, H. G. L. Schwefel, M. Göbelt, S. Christiansen, G. Leuchs, and C. Marquardt,
*Optica*, vol. 2, iss. 9, pp. 773-778. (2015) | www - "Crystalline MgF2 whispering gallery mode resonators for enhanced bulk index sensitivity," R. Zeltner, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel,
*The European Physical Journal Special Topics*, vol. 223, iss. 10, pp. 1989-1994. (2014) | www - "In optical pumping, less can be more," H. G. L. Schwefel,
*Science*, vol. 346, iss. 6207, pp. 304-305. (2014) | www - "Taking detection to the limit with optical microcavities: Recent advances presented at the 560. WE-Heraeus Seminar," F. Vollmer and H. G. L. Schwefel,
*The European Physical Journal Special Topics*, vol. 223, iss. 10, pp. 1907-1916. (2014) | www - "Sub-kHz lasing of a CaF2 whispering gallery mode resonator stabilized fiber ring laser," M. C. Collodo, F. Sedlmeir, B. Sprenger, S. Svitlov, L. J. Wang, and H. G. L. Schwefel,
*Optics Express*, vol. 22, iss. 16, pp. 19277-19283. (2014) | www - "Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern," G. Schunk, J. U. Fürst, M. Förtsch, D. V. Strekalov, U. Vogl, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt,
*Optics Express*, vol. 22, iss. 25, pp. 30795-30806. (2014) | www - "Highly efficient generation of single-mode photon pairs using a crystalline whispering gallery mode resonator," M. Förtsch, G. Schunk, J. U. Fürst, D. Strekalov, T. Gerrits, M. J. Stevens, F. Sedlmeir, H. G. L. Schwefel, S. W. Nam, G. Leuchs, and C. Marquardt,
*arXiv:1404.0593 [physics, physics:quant-ph], submitted to PRL*. (2014) | www - "High-Q MgF2 whispering gallery mode resonators for refractometric sensing in aqueous environment," F. Sedlmeir, R. Zeltner, G. Leuchs, and H. G. L. Schwefel,
*Optics Express*, vol. 22, iss. 25, pp. 30934-30942. (2014) | www - "Experimental characterization of an uniaxial angle cut whispering gallery mode resonator," F. Sedlmeir, M. Hauer, J. U. Fürst, G. Leuchs, and H. G. L. Schwefel,
*Optics Express*, vol. 21, iss. 20, pp. 23942-23949. (2013) | www - "Whispering gallery modes at the rim of an axisymmetric optical resonator: Analytical versus numerical description and comparison with experiment," I. Breunig, B. Sturman, F. Sedlmeir, H. G. L. Schwefel, and K. Buse,
*Optics Express*, vol. 21, iss. 25, pp. 30683-30692. (2013) | www - "Finite element simulation of a perturbed axial-symmetric whispering-gallery mode and its use for intensity enhancement with a nanoparticle coupled to a microtoroid," A. Kaplan, M. Tomes, T. Carmon, M. Kozlov, O. Cohen, G. Bartal, and H. G. L. Schwefel,
*Optics Express*, vol. 21, iss. 12, pp. 14169-14180}. (2013) | www - "Directional emission of dielectric disks with a finite scatterer in the THz regime," S. Preu, S. I. Schmid, F. Sedlmeir, J. Evers, and H. G. L. Schwefel,
*Optics Express*, vol. 21, iss. 14, pp. 16370-16380. (2013) | www - "Narrow-bandwidth high-order harmonics driven by long-duration hot spots," M. Kozlov, O. Kfir, A. Fleischer, A. Kaplan, T. Carmon, H. G. L. Schwefel, G. Bartal, and O. Cohen,
*New Journal of Physics*, vol. 14, iss. 6, p. 063036. (2012) | www - "Quick root searching method for resonances of dielectric optical microcavities with the boundary element method," C.-L. Zou, H. G. L. Schwefel, F.-W. Sun, Z.-F. Han, and G.-C. Guo,
*Optics Express*, vol. 19, iss. 17, pp. 15669-15678},. (2011) | www - "Broadband NIR photoluminescence from Bi-doped Ba2P2O7 crystals: Insights into the nature of NIR-emitting Bismuth centers," M. Peng, B. Sprenger, M. A. Schmidt, H. G. L. Schwefel, and L. Wondraczek,
*Optics Express*, vol. 18, iss. 12, pp. 12852-12863. (2010) | www - "CaF_2 whispering-gallery-mode-resonator stabilized-narrow-linewidth laser," B. Sprenger, H. G. L. Schwefel, Z. H. Lu, S. Svitlov, and L. J. Wang,
*Optics Letters*, vol. 35, iss. 17, pp. 2870-2872. (2010) | www - "Whispering-gallery-mode-resonator-stabilized narrow-linewidth fiber loop laser," B. Sprenger, H. G. L. Schwefel, and L. J. Wang,
*Optics Letters*, vol. 34, iss. 21, pp. 3370-3372},. (2009) | www - "Microwave whispering-gallery resonator for efficient optical up-conversion," D. V. Strekalov, H. G. L. Schwefel, A. A. Savchenkov, A. B. Matsko, L. J. Wang, and N. Yu,
*Physical Review A*, vol. 80, iss. 3, pp. 033810-5},. (2009) | www - "An improved method for calculating resonances of multiple dielectric disks arbitrarily positioned in the plane," H. G. L. Schwefel and C. G. Poulton,
*Optics Express*, vol. 17, iss. 15, pp. 13178-13186},. (2009) | www - "Coupled whispering gallery mode resonators in the Terahertz frequency range," S. Preu, H. G. L. Schwefel, S. Malzer, G. H. Döhler, L. J. Wang, M. Hanson, J. D. Zimmerman, and A. C. Gossard,
*Optics Express*, vol. 16, iss. 10, p. 7336. (2008) | www - "Direct experimental observation of the single reflection optical Goos-Hänchen shift," H. G. L. Schwefel, W. Köhler, Z. H. Lu, J. Fan, and L. J. Wang,
*Optics Letters*, vol. 33, iss. 8, pp. 794-796. (2008) | www - "Static envelope patterns in composite resonances generated by level crossing in optical toroidal microcavities," T. Carmon, H. G. L. Schwefel, L. Yang, M. Oxborrow, A. D. Stone, and K. J. Vahala,
*Physical Review Letters*, vol. 100, p. 103905. (2008) | www - "An efficient Fredholm method for the calculation of highly excited states of billiards," H. E. Türeci and H. G. L. Schwefel,
*Journal Of Physics A-Mathematical And Theoretical*, vol. 40, pp. 13869-13882. (2007) - "Polarization properties and dispersion relations for spiral resonances of a dielectric rod," H. G. L. Schwefel, A. D. Stone, and H. E. Türeci,
*Journal Of The Optical Society Of America B*, vol. 22, pp. 2295-2307. (2005) | www - "Dramatic shape sensitivity of directional emission patterns from similarly deformed cylindrical polymer lasers," H. G. L. Schwefel, N. B. Rex, H. E. Tureci, R. K. Chang, D. A. Stone, T. Ben-Messaoud, and J. Zyss,
*Journal of the Optical Society of America B*, vol. 21, iss. 5, pp. 923-934, }. (2004) | www - "Fresnel filtering in lasing emission from scarred modes of wave-chaotic optical resonators," N. B. Rex, H. E. Türeci, H. G. L. Schwefel, R. K. Chang, and A. D. Stone,
*Physical Review Letters*, vol. 88, p. 094102. (2002) | www - "Gaussian-optical approach to stable periodic orbit resonances of partially chaotic dielectric micro-cavities," H. Türeci, H. G. L. Schwefel, A. Stone, and E. Narimanov,
*Optics Express*, vol. 10, iss. 16, pp. 752-776. (2002) | www - H. E. Türeci, H. G. L. Schwefel, P. Jacquod, and A. D. Stone, "Modes of wave-chaotic dielectric resonators," Wolf, E., Ed., Elsevier, 2005, vol. 47.
- H. G. L. Schwefel, H. E. Türeci, D. A. Stone, and R. K. Chang, "Progress in Asymmetric Resonant Cavities: Using shape as a design parameter in dielectric microcavity lasers," Vahala, K., Chang, R. K., and Campillo, A. J., Eds., Singapore: World Scientific, 2005, vol. 5.
- "Harmonic Generation in Crystalline Whispering Gallery Mode Resonators," L. S. Trainor, C. Peuntinger, F. Sedlmeir, and H. G. L. Schwefel, in
*Proc. Proceedings of the 10th Annual Dodd-Walls Symposium*, 2017}. | www - "Efficient microwave to optical photon conversion: an electro-optical realisation," A. Rueda, F. Sedlmeir, M. C. Collodo, U. Vogl, B. Stiller, G. Schunk, D. Strekalov, C. Marquardt, J. M. Fink, O. Painter, G. Leuchs, and H. G. L. Schwefel, in
*Proc. 47th Winter Conference on the Physics of Quantum Electronics*, 2017}. | www - "Electro-optical modulator with 0.1\% quantum efficiency," A. Rueda, F. Sedlmeir, and H. G. L. Schwefel, in
*Proc. The 4$^{th}$ Advanced Electromagentics Symposium -- AES 2016 Malaga, Spain*, 2016}. | www - "Efficient single sideband microwave to optical conversion using a nonlinear WGM-resonator," A. Rueda, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Matariki Workshop on Quantum Science*, 2016}. | www - "Coherent up-conversion of microwave \& THz radiation into the telecom regime -- towards the fundamental limit --," A. Rueda, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Matariki Workshop on Quantum Science*, 2016}. | www - "Efficient microwave to optical photon conversion: An electro-optical approach," F. Sedlmeir, A. R., and H. G. L. Schwefel, in
*Proc. Proceedings of the 9th Annual Dodd-Walls Symposium*, 2016}. | www - "Third harmonic generation in Birefringent WGM resonators," F. Sedlmeir, C. Peuntigner, M. Hauer, and H. G. L. Schwefel, in
*Proc. Matariki Workshop on Quantum Science*, 2016}. | www - "Interfacing Atomic Transitions with Single Photons," G. Schunk, G. Shafiee, U. Vogl, D. V. Strekalov, M. Förtsch, A. Otterpohl, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. Laser Physics -- LPHYS2016*, 2016}. | www - "Third Harmonic Generation in Birefringent WGM Resonators: A Survey of Possible Geometries," C. Peuntinger, L. Trainor, F. Sedlmeir, M. Hauer, D. Strekalov, and H. G. L. Schwefel, in
*Proc. Photonics and {Fiber} {Technology} 2016 ({ACOFT}, {BGPP}, {NP}) (2016), paper {JT}4A.24*, 2016, p. 4. | text_html | www - "Efficient single sideband microwave to optical conversion using a {LiNbO}$_3$ {WGM}-resonator," A. R. Rueda Sanchez, F. Sedlmeir, M. Collodo, U. Vogl, B. Stiller, G. Schunk, D. Strekalov, C. Marquardt, J. Fink, O. Painter, G. Leuchs, and H. G. L. Schwefel, , 2016, p. 2. | www
- "Towards two-photon interference with a whispering gallery photon pair source," G. Schunk, G. Shafiee, U. Vogl, D. Strekalov, A. Otterpohl, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. Photonics and {Fiber} {Technology} 2016 ({ACOFT}, {BGPP}, {NP}) (2016), paper {NTh}2A.5*, 2016, p. 2. | text_html | www - "Towards and beyond squeezed vacuum states in a nonlinear crystalline whispering gallery mode resonator," A. Otterpohl, G. Schunk, U. Vogl, F. Sedlmeir, G. Shafiee, D. Strekalov, T. Gehring, H. G. L. Schwefel, U. L. Andersen, G. Leuchs, and C. Marquardt, in
*Proc. Verhandlungen der DPG*, 2016, p. 42. | www - "Nonlinear single sideband microwave to optical conversion using an electro-optic {WGM}-resonator," A. Rueda, F. Sedlmeir, M. C. Collodo, U. Vogl, B. Stiller, G. Schunk, D. Strekalov, C. Marquardt, J. M. Fink, O. Painter, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Photonics and {Fiber} {Technology} 2016 ({ACOFT}, {BGPP}, {NP}) (2016), paper {NTh}3A.6*, 2016, p. 3. | text_html | www - "Microwave to telecom electro-optic upconversion," A. Rueda, F. Sedlmeir, M. C. Collodo, U. Vogl, B. Stiller, G. Schunk, D. Strekalov, C. Marquardt, J. M. Fink, O. Painter, G. Leuchs, and H. G. L. Schwefel, in
*Proc. 23rd Central European Workshop on Quantum Optics -- Crete, Greece*, 2016. | www - "Two-photon interference with a non-degenerate photon-pair source," G. Schunk, G. Shafiee, U. V., D. Strekalov, A. Otterpohl, N. Soltani, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. Verhandlungen der DPG*, 2016, p. 42. | www - "Sub-{THz} photon counting receiver working at room temperature for polarization measurements of the cosmic microwave background radiation," G. Santamaría-Botello, A. Rivera-Lavado, S. Preu, F. Sedlmeir, D. Lioubtchenko, H. Schwefel, D. Segovia-Vargas, and L. E. G. Muñoz, in
*Proc. 2016 10th {European} {Conference} on {Antennas} and {Propagation} ({EuCAP})*, 2016, pp. 1-5. | application_pdf - "Efficient {Up}-{Conversion} of {Weak} {THz} {Signals} into the {Optical} {Domain} {Using} a {Whispering} {Gallery} {Mode} {Resonator}," F. Sedlmeir, A. R. Rueda Sanchez, S. Preu, E. Garcia, and H. G. L. Schwefel, , 2016, p. 1. | www
- "Efficient and Coherent Conversion of 80 GHz Signals into the Optical Domain Using a Nonlinear Whispering Gallery Mode Resonator," F. Sedlmeir, A. Rueda, S. Preu, E. L. Garçia-Muñoz, and H. G. L. Schwefel, in
*Proc. Photonics and {Fiber} {Technology} 2016 ({ACOFT}, {BGPP}, {NP}) (2016), paper {NTh}3A.4*, 2016, p. 3. | text_html | www - "Nonlinear {Quantum} {Optics} in a {Millimeter} {Size} {Whispering} {Gallery} {Mode} {Resonator}," G. Leuchs, C. Marquardt, and H. G. Schwefel, , 2015, p. 2. | application_pdf | www
- "Small refractive index, high performance: magnesium fluoride whispering gallery mode resonators for refractometric sensing," F. Sedlmeir, R. Zeltner, G. Leuchs, and H. G. L. Schwefel, in
*Proc. 2015 {European} {Conference} on {Lasers} and {Electro}-{Optics} - {European} {Quantum} {Electronics} {Conference} (2015), paper {CH}\_P\_23*, 2015, p. 23. | text_html | www - "Addressing {Rb} and {Cs} transitions with a tunable source of photon pairs," G. Schunk, U. Vogl, M. Förtsch, D. Strekalov, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. 2015 {European} {Conference} on {Lasers} and {Electro}-{Optics} - {European} {Quantum} {Electronics} {Conference} (2015), paper {EB}\_3\_1*, 2015, p. 3. | text_html | www - "Efficient up- and downconversion of microwave signals into the optical regime using a whispering gallery mode resonators," F. Sedlmeir, M. Schneidereit, S. Preu, M. M., A. Räisänen, L. E. García-Muñoz, G. Leuchs, and H. G. L. Schwefel, in
*Proc. 45$^{th}$ Winter Conference on the Physics of Quantum Electronics*, 2015. | www - "Efficient up- and downconversion of microwave signals into the optical domain," A. Rueda, F. Sedlmeir, M. Collodo, D. Strekalov, F. J., C. Marquardt, O. Painter, G. Leuchs, and H. G. L. Schwefel, in
*Proc. 45$^{th}$ Winter Conference on the Physics of Quantum Electronics*, 2015. | www - "Room Temperature Receiver based on Whispering Gallery Mode Resonators for Radio Astronomy Applications," M. M., L. E. García-Muñoz, H. G. L. Schwefel, F. Sedlmeir, M. Schneidereit, A. R., and D. Segovia-Vargas, in
*Proc. EOS 2014, Italy*, 2014. | www - "Mode spectrum and emission pattern of whispering gallery mode disk resonators," G. Schunk, M. Förtsch, J. Fürst, D. Strekalov, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. Verhandlungen der DPG*, 2014, p. 38. | www - "Angle cut, birefrigent whispering gallery mode resonators," F. Sedlmeir, M. Hauer, J. Fürst, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Verhandlungen der DPG*, 2014, p. 67. | www - "Sum and Difference Frequency Generation of Optical and Microwave Photons in a Whispering Gallery Mode Resonator," F. Sedlmeir, M. Schneidereit, S. Preu, M. M., A. Räisänen, L. E. García-Muñoz, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Frontiers in Optics, Tucson, USA*, 2014. | www - "Interfacing various atomic transitions and telecom wavelengths with a single tunable narrowband photon-pair source," G. Schunk, U. Vogl, M. Förtsch, D. V. Strekalov, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. Quantum Communication, Measurement and Computing --QCMC, Hefei, China*, 2014. - "Mode spectrum and emission patterns of large whispering gallery mode resonators," G. Schunk, M. Förtsch, J. Fürst, D. Strekalov, F. Sedlmeir, H. G. L. Schwefel, G. Leuchs, and C. Marquardt, in
*Proc. Laser Physics*, 2014. | www - "Highly efficient generation of narrow-band single-mode photons from a whispering gallery mode resonator," M. Förtsch, G. Schunk, J. Fürst, F. Sedlmeir, D. V. Strekalov, H. G. L. Schwefel, T. Gerrits, M. J. Stevens, S. W. Nam, G. Leuchs, and C. Marquard, in
*Proc. CLEO 2014 Conference Digest*, 2014, p. thg3-1}. | www - "Crystalline MgF2 whispering gallery mode resonators for enhanced bulk index sensitivity," R. Zeltner, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Taking Detection to the Limit: Biosensing with optical Microcavities, WE-Heraeus Seminar #560*, 2014. - "Refractometric Sensing with Crystalline MgF2 Whispering Gallery Mode Resonators," R. Zeltner, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Frontiers in Optics, Tucson, USA*, 2014. - "Waveguide coupling of high index whispering gallery mode resonators in the THz domain," M. F. Schneidereit, F. Sedlmeir, S. Preu, A. V. Raisanen, L. E. García-Muñoz, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Verhandlungen der DPG*, 2014, p. 61. | www - "Increasing quality through the surrounding: Whispering gallery mode resonators and their environment," R. Zeltner, F. Sedlmeir, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Verhandlungen der DPG*, 2014, p. 30. | www - "Single-mode photon pairs from a crystalline whispering gallery mode resonator," M. Förtsch, G. Schunk, J. Fürst, F. Sedlmeir, D. V. Strekalov, H. G. L. Schwefel, T. Gerrits, M. J. Stevens, S. W. Nam, G. Leuchs, and C. Marquard, in
*Proc. Quantum Communication, Measurement and Computing --QCMC, Hefei, China*, 2014. - "Novel Types of Nonlinear Enhancement in Uniaxial Crystalline Whispering-Gallery Mode Resonators," M. Hauer, F. Sedlmeir, J. Fürst, G. Leuchs, and H. G. L. Schwefel, in
*Proc. Photon14, London*, 2014. - "Wavelength tunability of a triply resonant whispering gallery optical parametric oscillator," G. Schunk, M. Förtsch, J. Fürst, D. Strekalov, F. Sedlmeir, H. G. L. Schwefel, C. Marquardt, and G. Leuchs, in
*Proc. Verhandlungen der DPG*, 2013, p. 54. | www - "Near-Infrared Spectroscopy on a Single Photon Level," M. Förtsch, T. Gerrits, M. J. Stevens, J. Fürst, G. Schunk, F. Sedlmeir, H. G. L. Schwefel, D. V. Strekalov, S. W. Nam, G. Leuchs, and C. Marquard, in
*Proc. CLEO Pacific Rim 2013 Conference Digest*, 2013, p. thg3-1}. - "Complex polarization in non z-cut whispering gallery mode resonators," F. Sedlmeir, M. Hauer, J. Fürst, D. V. Strekalov, and H. G. L. Schwefel, in
*Proc. {CLEO/ Europe} and {EQEC} 2013 Conference Digest*, 2013, p. 9. | www - "Directional emission of dielectric disks with a finite scatterer in the THz regime," J. Evers, S. I. Schmid, Preu Sascha, F. Sedlmeir, and H. G. L. Schwefel, in
*Proc. Verhandlungen der DPG*, 2013, p. 16. | www - "Complex polarization states of off-axis uniaxial whispering gallery mode resonators," F. Sedlmeir, M. Hauer, J. U. Fürst, D. V. Strekalov, and H. G. L. Schwefel, , 2013, p. 86001b-86001b. | www
- "Whispering Gallery Mode Resonator based Optica up-conversion of cw-THz radiation," H. G. L. Schwefel, F. Sedlmeir, S. Preu, S. Bauerschmidt, S. Malzer, D. V. Strekalov, G. H. Döhler, and G. Leuchs, in
*Proc. TERA-2012*, 2012. - "Towards highly efficient whispering gallery supported THz detection," F. Sedlmeir, D. V. Strekalov, S. Bauerschmidt, S. Preu, S. Malzer, G. H. Döhler, H. G. L. Schwefel, and G. Leuchs, in
*Proc. Verhandlungen der DPG*, 2012, p. 54. | www - "Widely tunable and compact optical parametric oscillator based on a whispering gallery mode resonator," M. J. Förtsch, G. Schunk, F. Sedlmeir, J. Fürst, C. Wittmann, D. Strekalov, H. G. L. Schwefel, C. Marquardt, and G. Leuchs, in
*Proc. Verhandlungen der DPG*, 2012, p. 40. | www - "Passive Ring-Laser Stabilization to Sub-kHz Linewidths with Whispering Gallery Mode Resonators," M. C. Collodo, B. Sprenger, F. Sedlmeir, S. Svitlov, H. G. L. Schwefel, and L. J. Wang, in
*Proc. Verhandlungen der DPG*, 2012, p. 28. | www - "Elliptically polarized whispering gallery modes in uniaxial crystal resonators," F. Sedlmeir, J. Fürst, D. V. Strekalov, G. H. Döhler, H. G. L. Schwefel, and G. Leuchs, in
*Proc. Frontiers in Optics*, 2012. | www - "Mode-hop-free tunable optical parametric oscillator utilizing a whispering gallery mode resonator," M. J. Förtsch, G. Schunk, F. Sedlmeir, J. Fürst, C. Wittmann, D. Strekalov, H. G. L. Schwefel, C. Marquardt, and G. Leuchs, in
*Proc. {CLEO:} Science and Innovations*, 2012, p. 3. | www - "Coupling and perturbing resonances of Whispering Gallery Mode resonators in the THz domain," S. Preu, S. I. Schmid, F. Sedlmeir, S. Preu, S. Malzer, G. H. Döhler, H. G. L. Schwefel, and G. Leuchs, in
*Proc. TERA-2012*, 2012. - "Sub-{kHz} Linewidth of Crystalline Whispering Gallery Mode Resonator Stabilized Ring-Laser," M. C. Collodo, B. Sprenger, F. Sedlmeir, S. Svitlov, H. G. L. Schwefel, and L. J. Wang, in
*Proc. {CLEO:} Science and Innovations*, 2012, p. 3. | www - "Terahertz Detection via Upconversion to the IR by Coherent Sum-Frequency Generation," F. Sedlmeir, H. G. L. Schwefel, D. V. Strekalov, S. Bauerschmidt, S. Preu, S. Malzer, G. H. Döhler, and G. Leuchs, in
*Proc. {CLEO/ Europe} and {EQEC} 2011 Conference Digest*, 2011. | www - "Crystalline Whispering Gallery Mode Stabilized Ring-Laser," M. Collodo, B. Sprenger, F. Sedlmeir, H. G. L. Schwefel, and L. J. Wang, in
*Proc. {CLEO/ Europe} and {EQEC} 2011 Conference Digest*, 2011, p. 4. | www - "Towards single THz Photon detection via multi-resonant whispering gallery mode resonator," F. Sedlmeir, S. Bauerschmidt, S. Preu, S. I. Schmid, J. Evers, S. Malzer, D. V. Strekalov, G. H. Döhler, H. G. L. Schwefel, and G. Leuchs, in
*Proc. Micro \& macro-cavities in classical and non-classical light*, 2011. | www - "Efficient Optical Up-Conversion by Coherent Sum-Frequency Generation for Highly Sensitive Terahertz Detection," F. Sedlmeir, H. G. L. Schwefel, D. V. Strekalov, S. Bauerschmidt, S. Preu, S. Malzer, G. H. Döhler, and G. Leuchs, in
*Proc. {CLEO/ Europe} and {EQEC} 2011 Conference Digest*, 2011, p. 4. | www - "Triple-resonant whispering gallery mode resonators for THz photons visualization by up conversion," H. G. L. Schwefel, D. V. Strekalov, F. Sedlmeir, S. Preu, S. Bauerschmidt, S. Malzer, G. H. Döhler, and G. Leuchs, in
*Proc. 41$^{st}$ Winter Conference on the Physics of Quantum Electronics*, 2011. | www - "Crystalline Whispering Gallery Mode Stabilized Ring-Laser," M. Collodo, B. Sprenger, F. Sedlmeir, H. G. L. Schwefel, and L. J. Wang, in
*Proc. Micro \& macro-cavities in classical and non-classical light*, 2011. | www - "Directional emission from Terahertz whispering gallery mode resonators," H. G. L. Schwefel, S. Preu, S. Bauerschmidt, S. Malzer, G. H. Döhler, L. Hong, A. C. Cossard, and L. J. Wang, in
*Proc. {Verhandlungen der DPG}*, 2010. | www - "Directional emission from Terahertz whispering gallery mode resonators," H. G. L. Schwefel, S. Preu, S. Bauerschmidt, S. Malzer, G. H. Döhler, H. Lu, A. C. Gossard, and L. J. Wang, in
*Proc. Verhandlungen der DPG*, 2010. | www - "Emitter of Continues-Wave, Highly Coherent, Extreme Ultraviolet Radiation that is Driven by Low-Power Laser," M. Kozlov, O. Cohen, T. Carmon, and H. G. L. Schwefel, in
*Proc. Conference on Lasers and Electro-Optics*, 2010, p. I. | www - "Three-Cornered-Hat Measurement of a Whispering Gallery Mode Stabilized Laser," B. Sprenger, H. G. L. Schwefel, Z. H. Lu, S. Svitlov, and L. J. Wang, in
*Proc. Frontiers in Optics*, 2010, p. 1. | www - "High-Order Harmonics of a Continuous-Wave Driving Laser," M. Kozlov, O. Kfir, A. Fleischer, T. Carmon, H. G. L. Schwefel, and O. Cohen, in
*Proc. Frontiers in Optics*, 2010, p. 2. | www - "Frequency Stable Fiber Ring Laser based on Whispering Gallery Mode Resonators," B. Sprenger, H. G. L. Schwefel, and L. J. Wang, in
*Proc. Verhandlungen der DPG*, 2010. | www - "CaF_2 Whispering Gallery Mode Resonator Stabilized Laser," B. Sprenger, H. G. L. Schwefel, Z. H. Lu, S. Svitlov, and L. J. Wang, in
*Proc. Nanophotonics meets Quantum Optics*, 2010. - "Auto-Stabilization of Ring Lasers Based on Whispering Gallery Mode Resonators," B. Sprenger, H. G. L. Schwefel, and L. J. Wang, in
*Proc. Conference on Lasers and Electro-Optics*, 2010, p. 7. | www - "Spherical Microcavity Stabilization of a Fiber Loop Laser," B. Sprenger, H. G. L. Schwefel, and L. J. Wang, in
*Proc. Frontiers in Optics*, 2009, p. 2. | www - "High Frequency Resonances in Clusters of Dielectric Discs," H. G. L. Schwefel and C. G. Poulton, in
*Proc. PECS-VIII*, 2009. | www - "Whispering gallery mode microresonator stabilized fiber loop laser," B. Sprenger, H. G. L. Schwefel, and L. J. Wang, in
*Proc. CLEO Europe*, 2009. - "Random dielectric nano disks: an efficient multipole approach," H. G. L. Schwefel and C. G. Poulton, in
*Proc. nanometer: The 2$^{nd}$ European Topical Meeting on Nanophotonics and Metamaterials*, 2009, p. 4. - "Dielectric Microcavities for THz Radiation: Identical Mode Spectrum and Coupling in Polyethylene Disks," S. Preu, H. G. L. Schwefel, S. Malzer, G. H. Döhler, and L. Wang, in
*Proc. CLEO/QELS*, 2008, p. 131. | www - "Level Crossing in Toroidal On-Chip Microcavities," H. G. L. Schwefel, L. Yang, M. Oxborrow, D. A. Stone, K. J. Vahala, and T. Carmon, in
*Proc. Laser Science XXIV*, 2008, p. 4. | www - "Numerically efficient multipole method for photonic molecules," H. G. L. Schwefel, C. G. Poulton, and L. J. Wang, in
*Proc. Transparent Optical Networks, 2008. ICTON 2008.*, 2008, pp. 230-233. | www - "Spectroscopy of Photonic Molecules in the Terahertz Range," H. G. L. Schwefel, S. Preu, S. Malzer, G. H. Döhler, and L. Wang, in
*Proc. Frontiers in Optics*, 2008, p. 5. | www - "Direct high precision measurement of optical Goos-Hänchen Shift," H. G. L. Schwefel, W. Köhler, Z. H. Lu, L. J. Wang, and J. Fan, in
*Proc. {CLEO/ Europe} and {IQEC} 2007 Conference Digest*, 2007, p. I. | www - "A Fast Fredholm method for Quantum Billiards," H. G. L. Schwefel and H. E. Türeci, in
*Proc. Nodal patterns in physics and mathematics: A workshop to celebrate Chladni's 250$^{th}$ birthday*, 2006. - "Efficient Boundary Integral Method for Quantum Billiards," H. G. L. Schwefel, H. E. Türeci, and D. A. Stone, in
*Proc. APS March Meeting*, 2006, p. 27. | www - "Mode Competition and Output Power from Regular and Chaotic Dielectric Cavity Lasers," D. A. Stone, H. E. Türeci, and H. G. L. Schwefel, in
*Proc. Frontiers in Optics*, 2005, p. 1. | www - "Focusing light with unstable manifolds," H. G. L. Schwefel, H. E. Türeci, R. K. Chang, and A. D. Stone, in
*Proc. Minisymposium: Nonlinear Quantum Dynamics*, 2005. - "Vector Quantum Chaos in a Dielectric Rod," H. G. L. Schwefel, H. E. Türeci, and A. D. Stone, in
*Proc. Aspects of Quantum Chaotic Scattering*, 2005. - "Deformed microdisk lasers and refractive billiards," H. E. Türeci, N. B. Rex, H. G. L. Schwefel, R. K. Chang, and D. A. Stone, in
*Proc. APS March Meeting*, 2002, p. 27. | www - "Lasing emission from stable and unstable modes of deformed {GaN} microdisks," H. E. Türeci, N. B. Rex, H. G. L. Schwefel, R. K. Chang, and A. D. Stone, in
*Proc. {CLEO/ QELS}*, 2002, pp. 23-24}. | www - "Chaos brought to light: Microcavity Laser," H. E. Türeci, H. G. L. Schwefel, A. D. Stone, N. B. Rex, and R. K. Chang, , 2002.
- "Dramatic shape sensitivity of emission patterns for similarly deformed cylindrical polymer lasers," H. G. L. Schwefel, N. B. Rex, H. E. Türeci, R. K. Chang, and A. D. Stone, in
*Proc. CLEO/QELS*, 2002, pp. 24-25. | www - "Nonrefractive Emission from Scarred States," H. G. L. Schwefel, H. T. E., N. B. Rex, R. K. Chang, and A. D. Stone, in
*Proc. Complexity from Microscopic to Macroscopic Scales: Coherence and Large Deviations*, 2001. - "Chaos brought to light: Microcavity Resonators," H. E. Türeci, H. G. L. Schwefel, and A. D. Stone, , 2001.
- H. G. L. Schwefel, "Directionality and Vector Resonances of Regular and Chaotic Dielectric Microcavities," PhD Thesis, 2004. | www