Wavelength selectable laser oscillator in wavelength tunable las

Details Wavelength selectable laser oscillator in wavelength tunable las Wavelength selectable laser oscillator in wavelength tunable las

1997-04-29

1999-08-10

Davie, James W.

Coherent light generators

Particular beam control device

Q-switch

372 20, 372 49, 372 93, 372100, H01S 310

Patent

active

059369817

ABSTRACT:
An object of the present invention is to provide a wavelength selectable laser oscillator in wavelength tunable laser by which the rate of repetitive pulse oscillation of laser beam in a laser resonator can be markedly increased in comparison with that of conventional ones, besides excitation input can be decreased, and in addition, speed-up of wavelength tuning speed can be achieved, whereby flexibility is remarkably elevated in case of practicing the wavelength selectable laser oscillator. The wavelength selectable laser oscillator in wavelength tunable laser comprises a laser resonator composed of opposed mirrors each having a prescribed reflectivity; a wavelength tunable laser medium disposed in the laser resonator and capable of laser oscillation in a wavelength zone of a prescribed range; an acousto-optical crystal disposed in the laser oscillator and to which is inputted the outgoing light from the wavelength tunable laser medium; an acoustic wave inputting means mounted on the acousto-optical crystal and for inputting an acoustic wave to the acousto-optical crystal; an optical element disposed in the laser resonator and for correcting dispersion of the diffracted light outputted from the acousto-optical crystal; and a pulse excitation laser for inputting excitation laser beam into the laser resonator.

REFERENCES:
patent: 4159453 (1979-06-01), Brandt et al.
patent: 4894831 (1990-01-01), Alfrey
"Electronic Tuning of a Dye Laser Using the Acousto-Optic Filter" by D.J. Taylor et al., Applied Physics Letters, vol. 19, No. 8, pp. 269-271, Oct. 15, 1971.
"Widely Tunable 90.degree. Phase-Matched KTP Parametric Osillator" by K. Kato et al., Optics Letters, vol . 17, No. 3, pp. 178-179, Feb 1, 1992.
Isaenko Yu Zh et al., Sov. J. Quantum Electron., 18(10), Oct. 1988 (USSR).
J. L. Lambert, 2301 NTIS Tech Notes, Oct. 1991 (USA).
E. Schweicher et al., 8251 Revue HF Tijdschrift XIV (1988) No. 3/4 (BE) (No Month).
S. Wada et al., Optics Letters, May 15, 1996, vol. 21, No. 10, Opt. Soc. Am. (USA).

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