Tunable pulsed single longitudinal mode laser oscillator

Details Tunable pulsed single longitudinal mode laser oscillator Tunable pulsed single longitudinal mode laser oscillator

1988-07-01

1990-02-13

Davie, James W.

Coherent light generators

Particular beam control device

Tuning

372102, H01S 310

Patent

active

049013220

ABSTRACT:
A laser system for producing pulsed, single longitudinal mode optical energy over a widely tunable range of wavelengths. The system includes an optical cavity and a solid-state gain medium. The optical cavity comprises first, second, and third optical element means. The first optical element means reflects energy received along a reflective optical path and directs the energy toward the second optical element means, which diffracts the optical energy onto a diffraction axis and an output axis. The energy diffracted along the diffraction axis is reflected back toward the second optical element means by a third optical element means, thereby creating a resonant optical cavity. The solid-state gain medium is located on the optical axis between the first and second optical element means and receives optical energy from a pump beam that is within two degrees of being colinear with the reflective optical path. The solid-state gain medium converts the pump beam energy to optical energy having a desires wavelength with a very high efficiency. The laser system is tunable by moving the third optical element means with respect to the second optical element means, thereby causing optical energy at a tunable wavelengh to resonate within the optical cavity.

REFERENCES:
patent: 3833862 (1974-09-01), Wickersheim et al.
patent: 4167712 (1979-09-01), Esterowitz et al.
patent: 4229710 (1980-10-01), Shoshan
W. A. Hardy et al., "Tunable Solid State Laser", IBM Technical Disclosure Bulletin, vol. 6, No. 8, Jan. 1964, pp. 66-67.

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