LASER DEVICE
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United States of America Patent
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Issued Date -
Jan 8, 2015
app pub date -
Sep 19, 2012
filing date -
Jan 27, 2012
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Abstract
Provided is an external resonance-type laser device with high wavelength conversion efficiency in which a nonlinear optical crystal is disposed outside of a resonator. The laser device includes a laser generation device configured to generate high-intensity laser light, a nonlinear optical crystal on which the high-intensity laser light generated by the laser generation device is incident and which is configured to generate a second harmonic wave light, and a different-element-fluxless-grown nonlinear optical crystal on which the second harmonic wave light generated by the nonlinear optical crystal is incident and which is configured to generate a fourth harmonic wave light. In the laser device, the different-element-fluxless-grown nonlinear optical crystal is not damaged even when high-intensity laser light of 100 MW/cm2 or more is incident.
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