Dr. Johannes Kern

PostDoc

Wilhelm-Klemm-Str. 10
48149 Münster

 

E-Mail: johannes.kern@uni-muenster.de

Tel: +49 251 83 36582

 

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Publications

• Assembly of large hBN nanocrystal arrays for quantum light emission, J. Preuß, E. Rudi, J. Kern, R. Schmidt, R. Bratschitsch, and S. Michaelis de Vasconcellos, 2D Materials 8, 035005 (2021)
• Space- and time-resolved UV-to-NIR surface spectroscopy and 2D nanoscopy at 1 MHz repetition rate, B. Huber, S. Pres, E. Wittmann, L. Dietrich, J. Lüttig, D. Fersch, E. Krauss, D. Friedrich, J. Kern, V. Lisinetskii, M. Hensen, B. Hecht, R. Bratschitsch, E. Riedle, and T. Brixner, Rev. Sci. Instr. 90, 113103 (2019)
• Excited-state trions in monolayer WS2, A. Arora, T. Deilmann, T. Reichenauer, J. Kern, S. Michaelis de Vasconcellos, M. Rohlfing, and R. Bratschitsch, Phys. Rev. Lett., accepted (2019)
• Supercontinuum second harmonic generation spectroscopy of atomically thin semiconductors, T.Stiehm, R. Schneider, J. Kern, I. Niehues, S. Michaelis de Vasconcellos, and R. Bratschitsch, Rev. Sci. Instrum. 90, 083102 (2019)
• Phonon-assisted emission and absorption of individual color centers in hexagonal boron nitride, D. Wigger, R. Schmidt O. Del Pozo-Zamudio, J. Preuß, P. Tonndorf, R. Schneider, P. Steeger, J. Kern, Y. Khodaei, J. Sperling, S. Michaelis de Vasconcellos, R. Bratschitsch, and T. Kuhn, 2D Materials 6, 035006 (2019)
• Incorporation of oxygen atoms as a mechanism for photoluminescence enhancement of chemically treated MoS2, C. Schwermann, T. Stiehm, P. Tonndorf, R. Schneider, R. Schmidt, J. Kern, S. Michaelis de Vasconcellos, R. Bratschitsch, and N. L. Doltsinis, Phys. Chem. Chem. Phys. 20, 16918-16923 (2018)
• On-chip waveguide coupling of a layered semiconductor single-photon source, P. Tonndorf, O. Del Pozo Zamudio, N. Gruhler, J. Kern, R. Schmidt, A. I. Dmitriev, A. P. Bakhtinov, A. I. Tartakovskii, W. HP Pernice, S. Michaelis de Vasconcellos, and R. Bratschitsch, Nano Lett. 17, 5446 (2017)
• Polarization contrast scattering spectroscopy of individual metal nanoantennas, T. Stiehm, J. Kern, R. Schmidt, S. Michaelis de Vasconcellos, and R. Bratschitsch, Appl. Phys. B 123, 150 (2017)
• Single-photon emitters in GaSe, P. Tonndorf, S. Schwarz, J. Kern, I. Niehues, O. Del Pozo Zamudio, A. Dmitriev, A. Bakhtinov, D. Borisenko, N. Kolesnikov, A. Tartakovskii, S. Michaelis de Vasconcellos, and R. Bratschitsch, 2D Materials 4, 021010 (2017)
• Nanoscale positioning of single-photon emitters in atomically thin WSe_2,  J. Kern, I. Niehues, P. Tonndorf, R. Schmidt, D. Wigger, R. Schneider, T. Stiehm, S. Michaelis de Vasconcellos, D. E. Reiter, T. Kuhn, and R. Bratschitsch, Advanced Materials 28, 7101 (2016)
• Nanoantenna-controlled radiation pattern of the third-harmonic emission, T. Stiehm, J. Kern, M. Jürgensen, S. Michaelis de Vasconcellos, and R. Bratschitsch, Appl. Phys. B 122,119 (2016)
• Gap plasmonics of silvernanocube dimers, D. Knebl, A. Hörl, A. Trügler, J. Kern, J.R. Krenn, P. Puschnig, and U. Hohenester, Physical Review B, 93 (8), (2015)

• Electrical-driven optical antennas, J. Kern, R. Kullock, J.P. Prangsma, M. Emmerling, M. Kamp, and B. Hecht, Nature Photonics (2015)
• Nanoantenna-enhanced light−matter interaction in atomically thin WS_2,  J. Kern, A. Trügler,I. Niehues, J. Ewering, R. Schmidt, R. Schneider, S. Najmaei, A. George, J. Zhang, J. Lou, U. Hohenester, S. Michaelis de Vasconcellos, and R. Bratschitsch, ACS Photonics (2015)
• Single-photon emission from localized excitons in an atomically thin semiconductor, P. Tonndorf, R. Schmidt, R. Schneider, J. Kern, M. Buscema, G. A. Steele, A. Castellanos-Gomez, H. S. J. van der Zant, S. Michaelis de Vasconcellos, and R. Bratschitsch, Optica 2, 347 (2015)

• Atomic-scale confinement of resonant optical fields, J. Kern, S. Grossmann, N. V. Tarakina, T. Häckel, M. Emmerling, M. Kamp, J.-S. Huang, P. Biagioni, J. C. Prangsma, and B. Hecht, Nano Letters, 12 (2012)
• Electrically connected resonant optical antennas, J. C. Prangsma*, J. Kern*, A. G. Knapp, S. Grossmann, M. Emmerling, M. Kamp, and B. Hecht (* equal contribution), Nano Letters, 12 (2012)
• Dynamics of four-photon photoluminescence in gold nanoantennas, P. Biagioni, D. Brida, J.-S. Huang, J. Kern, L. Duo, B. Hecht, M. Finazzi, and G. Cerullo, Nano Letters, 12 (2012)
• Atomically flat single-crystalline gold nanostructures for plasmonic nanocircuitry, J.-S. Huang, V. Callegari, P. Geisler, C. Brüning, J. Kern, J. C. Prangsma, X. Wu, T. Feichtner, J. Ziegler, P. Weinmann, M. Kamp, A. Forchel, P. Biagioni, U. Sennhauser, and B. Hecht, Nature Communications, 1 (2010)
• Mode imaging and selection in strongly coupled nanoantennas, J.-S. Huang, J. Kern, P. Geisler, P. Weinmann, M. Kamp, A. Forchel, P. Biagioni, and B. Hecht, Nano Letters, 10 (2010)
• Surface-normal emission of a high-Q resonator using a subwavelength high-contrast grating, Y. Zhou, M. Moewe, J. Kern, M. C.Y. Huang, and C. J. Chang-Hasnain, Optics Express, 16 (2008)
• A novel high-Q resonator using high contrast subwavelength grating, Y. Zhou, M. Moewe, J. Kern, M. C.Y. Huang, and C. J. Chang-Hasnain,
  Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, (4-9 May, 2008)
• Very large fabrication tolerance of VCSELs using high-contrast subwavelength grating, Y. Zhou, M. C.Y. Huang, J. Kern, and C. J. Chang-Hasnain,
  OSA Annual Meeting, Frontiers in Optics, San Jose, CA, (17-20 September, 2007)

 

Awards