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pro vyhledávání: '"S. Gotzinger"'
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Publikováno v:
Semiconductor Science and Technology. 21:1412-1415
The electrical and optical properties of fluorine impurities in ZnSe have been studied. Bulk and delta-doped ZnSe:F layers were grown by molecular beam epitaxy. Electrical measurements reveal evidence that a majority of fluorine impurities act as sha
Autor:
S. Reitzenstein, L. Worschech, S. Hofling, K. Brunner, A. Forchel, V. Kulakovskii, T.L. Reinecke, D. Press, S. Gotzinger, Y Yamamoto
Publikováno v:
2007 International Nano-Optoelectronics Workshop.
Engineering the interaction of light with matter allows one to tune important properties of solids like e.g. the spontaneous emission rate or the spontaneous emission coupling factor into a laser mode. We have investigated light matter interaction ef
Autor:
Martin Kamp, Alfred Forchel, S. Gotzinger, David Press, Carolin Hofmann, Andreas Löffler, Stephan Reitzenstein, Yoshihisa Yamamoto
Publikováno v:
Scopus-Elsevier
We observe antibunching in the photons emitted from a strongly-coupled single quantum dot and pillar microcavity in resonance. When the quantum dot was spectrally detuned from the cavity mode, the cavity emission remained antibunched, and also antico
Autor:
Stephan Reitzenstein, Yoshihisa Yamamoto, Alfred Forchel, M. Kamp, David Press, Andreas Löffler, S. Gotzinger, K. Hofmann
Publikováno v:
SPIE Proceedings.
We report on experiments where a single quantum dot is strongly coupled to a high-Q mode of a micropillar cavity. Photon correlation measurements confirm that the observed avoided crossing originates from strong coupling of a single quantum dot to th
Publikováno v:
Scopus-Elsevier
We describe microdisk lasers exhibiting submicrowatt CW lasing thresholds from a small number of QD emitters. Changes in the cavity linewidth, second-order correlation measurements, and output emission versus input pumping are used to verify lasing.
Autor:
Klaus H. Ploog, Glenn S. Solomon, Hui Deng, Yoshihisa Yamamoto, David Press, Rudolf Hey, S. Gotzinger
Publikováno v:
Physical Review Letters. 97
We study the momentum distribution and relaxation dynamics of semiconductor microcavity polaritons by angle-resolved and time-resolved spectroscopy. Above a critical pump level, the thermalization time of polaritons at positive detunings becomes shor
Publikováno v:
2006 64th Device Research Conference.
Autor:
Charles Santori, Yoshihisa Yamamoto, Yasuhiko Arakawa, K. Hoshino, Satoshi Kako, S. Gotzinger
Publikováno v:
Nature materials. 5(11)
Fundamentally secure quantum cryptography has still not seen widespread application owing to the difficulty of generating single photons on demand. Semiconductor quantum-dot structures have recently shown great promise as practical single-photon sour
Publikováno v:
Physical review letters. 98(11)
We report a quantum dot microcavity laser with a cw sub-microW lasing threshold, where a significant reduction of the lasing threshold is observed when a single quantum dot (QD) state is aligned with a cavity mode. The quality factor exceeds 15,000 b