Measuring the second-order coherence of a nanolaser by intracavity frequency doubling

Yasutomo Ota, Katsuyuki Watanabe, Satoshi Iwamoto, Yasuhiko Arakawa

研究成果: Article査読

11 被引用数 (Scopus)

抄録

We measured the second-order coherence at zero time delay, g(2)(0), of a high-Q photonic crystal nanocavity quantum dot laser below and above the lasing threshold, via detecting visible emission originated from the second harmonic generation (SHG) occurring within the laser cavity. The efficiency of the nonlinear frequency conversion process, defined by SHG intensity divided by the square of laser output intensity, is shown to be proportional to g(2)(0), and hence is used for the measurement. The obtained g(2)(0) values show good agreement with those measured by a Hanbury Brown-Twiss interferometer equipped with ultrafast superconducting single-photon detectors.

本文言語English
論文番号023824
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
89
2
DOI
出版ステータスPublished - 2014 2 18
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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