Method and Laser Device for Stabilized Frequency Doubling
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United States of America Patent
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Issued Date -
Dec 18, 2008
app pub date -
Jun 14, 2007
filing date -
Jun 14, 2007
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Abandoned
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Abstract
A system and method for emitting a plurality of second harmonic light frequencies that is generally unaffected by small variations in external cavity length and temperature. An illustrative embodiment provides a laser system that comprises a semiconductor gain region operating within the coherence collapse regime, an intra-cavity nonlinear optical medium, and a feedback reflector. The semiconductor gain region operates in the coherence collapse regime and produces broad frequency fundamental light, the nonlinear resonator doubles a first portion of the broad frequency fundamental light and emits a plurality of second harmonic light frequencies external to the laser system. A second portion of the broad frequency fundamental light is reflected into the semiconductor gain region with a feedback power ratio sufficient to cause the semiconductor gain region to operate in the coherence collapse regime.
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