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Spectral linewidth reduction of single-mode and mode-locked lasers using a feed-forward heterodyne detection scheme

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Abstract

We present a novel feed-forward laser linewidth reduction scheme. The linewidth of a DFB laser is reduced from 9.4MHz to 37.2kHz. Sixteen modes of a mode-locked laser are simultaneously reduced from ~20MHz to below 300kHz.

© 2014 Optical Society of America

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