Passively Q-switched laser with a dual-cavity configuration
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United States of America Patent
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Oct 7, 1997
Grant Date -
N/A
app pub date -
Feb 22, 1996
filing date -
Feb 25, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a passively Q-switched laser with a dual-cavity configuration to obtain a symmetrical laser pulse with a short and variable pulse width. The passively Q-switched laser comprises: a laser medium and a passively Q-switching medium; a cavity mirror capable of fully reflecting the respective wavelengths emitted from the laser medium and the passively Q-switching medium; a main cavity mirror composed of a dichroic mirror having non-reflective characteristics for the light emitted from the passively Q-switching medium and reflective characteristics for the light emitted from the laser medium with a reflectivity of 10% or more; and, an auxiliary cavity mirror composed of a dichroic mirror having non-reflective characteristics for the light emitted from the laser medium and reflective characteristics for the light emitted from the passively Q-switching medium with a reflectivity of 10% or more and capable of moving transversely against the laser beam.
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