Strategy of optical negative feedback for narrow linewidth semiconductor lasers

研究成果: Article

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The coherent optical negative feedback scheme is systematically investigated by calculating rate equations that model a noise-added semiconductor laser coupled to a Fabry-Perot optical filter for the FM noise reduction. The calculated results indicate that the FM noise is minimized when a lasing frequency of the free-running laser matches a valley frequency of the filter (the point where power reflectivity becomes zero) under a specific feedback phase, where the slope of the electric field reflectivity for the lasing light and frequency discrimination efficiency to electric field amplitude of the feedback light becomes maximum. And the linewidth is also minimized at a lasing frequency corresponding to the valley frequency of the Fabry-Perot optical filter. It is also made clear that the laser frequency becomes less sensitive to the fluctuation of the injection current of the laser under optical negative feedback.

元の言語English
ページ(範囲)21159-21169
ページ数11
ジャーナルOptics Express
26
発行部数16
DOI
出版物ステータスPublished - 2018 8 6

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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