# publications

- "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 - "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 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) - "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 - "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 - "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 - "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) - "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 - "In optical pumping, less can be more," H. G. L. Schwefel,
*Science*, vol. 346, iss. 6207, pp. 304-305. (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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - 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.
- 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.
- "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 - "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 - "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 - "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 - "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 - "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 - "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
- "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 - "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 - "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 - "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 - "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 - "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 - "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
- "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 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 - "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 - "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. - "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 - "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 - "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 - "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. - "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 - "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. - "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 - "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 - "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. - "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. - "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 - "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 - "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 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
- "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 - "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 - "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. - "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. - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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 - "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. - "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 - "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 - "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 - "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. - "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 - "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 - "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 - "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 - "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 - "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 - "Chaos brought to light: Microcavity Laser," H. E. Türeci, H. G. L. Schwefel, A. D. Stone, N. B. Rex, and R. K. Chang, , 2002.
- "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