Method for stabilizing output of higher harmonic waves and short

Details Method for stabilizing output of higher harmonic waves and short Method for stabilizing output of higher harmonic waves and short

1995-09-13

1999-08-10

Bovernick, Rodney

Coherent light generators

Particular component circuitry

Optical pumping

372 22, H01S 300

Patent

active

059369850

ABSTRACT:
A laser beam as fundamental waves which is emitted from a distribution Bragg reflection (DBR) semiconductor laser is incident on an optical waveguide of a light wavelength conversion device in which domain-inverted regions and the optical waveguide are formed in an LiTaO.sub.3 substrate. The wavelength of the incident laser beam is then converted so as to obtain higher harmonic waves such as blue light. In the conversion, a drive current to be applied to a DBR portion of the DBR semiconductor laser is changed so as to change an oscillating wavelength of the DBR semiconductor laser, thereby matching the oscillating wavelength with a phase-matched wavelength of the light wavelength conversion device. Thus, the generation of the harmonic waves to be output is stably controlled.

REFERENCES:
patent: 4995048 (1991-02-01), Kuindersma et al.
patent: 5299212 (1994-03-01), Koch et al.
patent: 5325382 (1994-06-01), Emura et al.
patent: 5384797 (1995-01-01), Welch et al.
patent: 5619369 (1997-04-01), Yamamoto et al.
Kuzuhisa Yamamoto & Kiminori Mizuuchi, "Blue-Light Generation by Frequency Doubling of a Laser Diode in a Periodically Domain-Inverted LiTaO.sub.3 Waveguide", IEEE Photonics Tech. Ltrs., Vol. 4, No. 5, May 1992.
C. Zimmerman et al., "Second Harmonic Generation at 972 nm Using a Distributed Bragg Reflection Semiconductor Laser", Applied Physics Letters, vol. 61, No. 23, pp. 2741-2743, Dec., 7, 1992.

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