Optical waveguides – Having nonlinear property
Patent
1992-06-11
1993-08-17
Healy, Brian
Optical waveguides
Having nonlinear property
385 14, 385131, 385132, 372 21, 372 22, 372 23, 372 46, 372 50, G02B 610, H01S 310
Patent
active
052376362
ABSTRACT:
An optical wavelength converting device is incorporated in a region inside of a resonator of a semiconductor laser, and a wavelength of a laser beam, which has been produced by the semiconductor laser and which serves as a fundamental wave, is converted by the optical wavelength converting device. A photodetector detects an intensity of the laser beam, which serves as the fundamental wave. A control circuit controls a drive current for the semiconductor laser such that the intensity of the laser beam, which intensity is indicated by an output of the photodetector, may converge to a value corresponding to a phase matching wavelength of the laser beam. The wavelength of the fundamental wave is thereby prevented from fluctuating, and a high wavelength conversion efficiency is obtained.
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Fuji Photo Film Co. , Ltd.
Healy Brian
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