Laser apparatus

Details Laser apparatus Laser apparatus

1988-06-03

1990-02-20

Scott, Jr., Leon

Coherent light generators

Particular beam control device

372 95, 372 99, 372103, 372108, H01S 310

Patent

active

049032712

ABSTRACT:
A laser apparatus has a phase regulator for regulating phase of output laser beam is provided, in which a full reflection portion of an output mirror is made partially reflective and a relative optical length thereof to a non-reflection portion of the output mirror is regulated by a relative thickness thereof. In one aspect of the invention, a coating provided on a center portion of an inner surface of an output mirror of a resonator comprises a partially reflective coating and a phase difference between laser beam portions passing through the center portion and a surrounding portion is regulated by a thin membrane having same refraction index as that of a matrix of the output mirror and provided between the matrix and a coating on either surface of the output mirror.

REFERENCES:
patent: 4327129 (1988-04-01), Sepp
patent: 4553244 (1985-11-01), Benedict et al.

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