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High-power single-mode emission from a broad-area semiconductor laser with a pseudoexternal cavity and a Fabry–Perot etalon

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Abstract

A simple pseudoexternal cavity with a commerically available broad-area laser diode, standard optics, and a thin Fabry–Perot etalon provides single-mode emission with 1-W optical power and a tuning range of 0.5 nm. The linewidth is estimated at 200 MHz. Such high-power semiconductor laser systems are promising light sources for atomic physics, in which narrow-band high-power light is necessary, for example, for optical pumping of alkali metal vapor. Methods for expanding the tuning range and achieving higher narrow-band optical power are discussed.

© 1997 Optical Society of America

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