Elsevier

Optics Communications

Volume 110, Issues 1–2, 1 August 1994, Pages 137-140
Optics Communications

Explanation of double-peaked intensity noise spectrum of an external-cavity semiconductor laser

https://doi.org/10.1016/0030-4018(94)90185-6Get rights and content

Abstract

We give a quantitative explanation for the intriguing double-peaked structure in the intensity noise spectrum of an external-cavity semiconductor laser. We find strong suppression of the intensity noise due to coupling between the subthreshold modes (FM-locking). The measured power dependence of the shift and broadening of the double-peaked structure allows detailed diagnostic of the laser.

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