Coupled-cavity Q-switched laser

Details Coupled-cavity Q-switched laser Coupled-cavity Q-switched laser

1989-09-07

1991-01-01

Sikes, William L.

Coherent light generators

Particular beam control device

Q-switch

372 97, H01S 311

Patent

active

049824058

ABSTRACT:
A Q-switched laser having a gain medium disposed within a first cavity and a second cavity whose optical path length is adjustable such that the quality of the first resonant cavity is affected. One aspect of the invention is the changing of the physical path length of the second cavity so as to affect the reflectivity of a mirror common to both cavities as seen from the first cavity. Another aspect of the invention is the incorporation, within the second cavity, of a material whose refractive index or absorption coefficient can be varied by the application of an electric field, a magnetic field, a temperature change or an applied pressure.

REFERENCES:
patent: 3187270 (1965-06-01), Kogelnik et al.
patent: 4387344 (1983-06-01), Meyer
patent: 4550410 (1985-10-01), Chenausky et al.
patent: 4622671 (1986-11-01), Tsang
patent: 4734380 (1988-03-01), Tsang

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