External resonator type semiconductor laser apparatus
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United States of America Patent
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-
Mar 28, 1989
Grant Date -
N/A
app pub date -
Dec 4, 1986
filing date -
Dec 10, 1985
priority date (Note) -
Expired
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Abstract
An external resonator type semiconductor laser apparatus comprising a semiconductor laser device, a reflector positioned behind said laser device in a manner to face the light-emitting rear facet of said laser device, and a photodetector, for detecting the optical output of said laser device, positioned backward of said reflector, wherein a part of the laser light from said light-emitting rear facet is reflected by said reflector and the reflected light is then incident to said photodetector.
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