Reduction of Intensity Noise in Semiconductor Lasers by Simultaneous Usage of the Superposition of High Frequency Current and the Electric Negative Feedback

Minoru YAMADA; Itaru TERA; Kenjiro MATSUOKA; Takuya HAMA; Yuji KUWAMURA

doi:10.1587/transele.E95.C.1444

Regular Section

Reduction of Intensity Noise in Semiconductor Lasers by Simultaneous Usage of the Superposition of High Frequency Current and the Electric Negative Feedback

Minoru YAMADA, Itaru TERA, Kenjiro MATSUOKA, Takuya HAMA, Yuji KUWAMURA

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Keywords: semiconductor laser, optical feedback noise, noise reduction, electric negative feedback, high frequency current superposition

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2012 Volume E95.C Issue 8 Pages 1444-1446

DOI https://doi.org/10.1587/transele.E95.C.1444

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Abstract

Reduction of the intensity noise in semiconductor lasers is an important subject for the higher performance of an application. Simultaneous usage of the superposition of high frequency current and the electric negative feedback loop was proposed to suppress the noise for the higher power operation of semiconductor lasers. Effective noise reduction of more than 25dB with 80mW operation was experimentally demonstrated.

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