Light source apparatus and inspection apparatus
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United States of America Patent
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Jul 4, 2017
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N/A
app pub date -
May 12, 2016
filing date -
May 13, 2015
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Abstract
Provided are a light source apparatus and an inspection apparatus that can stably output a wavelength converted light beam. A light source apparatus includes a laser light source that generates a first fundamental light beam, at least one nonlinear optical crystal that generates a wavelength converted light beam using the fundamental light beam or a harmonic laser beam of the fundamental light beam as an incident light beam, a detector that detects the wavelength converted light beam, an acousto-optic modulator that is disposed in an optical path of the incident light beam in such a way that a zero-order light beam enters the nonlinear optical crystal, and a controller that controls an output intensity of the wavelength converted light beam according to a detection signal from the detector.
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