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Low Threshold Single-Mode 780nm Surface Grating DFB Lasers for Atomic Clocks

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We present a low threshold single-mode 780nm surface-grating DFB laser. The index-coupled surface-grating yieds a coupling coefficient ~1000cm−1. The designed 50μm-long laser exhibits a threshold current of 0.4mA and a high slope efficiency of 0.45mW/mA.

© 2017 Optical Society of America

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