Solid-state laser in which the two polarization modes of the fun

Details Solid-state laser in which the two polarization modes of the fun Solid-state laser in which the two polarization modes of the fun

1991-05-16

1993-03-23

Davie, James W.

Coherent light generators

Particular beam control device

Nonlinear device

372 32, 372105, 372106, H01S 310

Patent

active

051970732

ABSTRACT:
A solid state laser apparatus in which a fundamental laser beam generated in a laser medium is resonated so as to pass a nonlinear optical crystal element provided within a resonator to thereby generate a secondary harmonic laser light and a first optical element for suppressing a coupling caused by a sum-frequency generation between two polarization modes of the fundamental wave laser beam is provided within the resonator includes of a control device for controlling an effective resonator length of the resonator such that the two polarization modes of the fundamental wave laser beam become the same in oscillation intensity. Therefore, a mode hopping noise caused by the mode coupling of the fundamental laser beam within the same polarization mode can be avoided and the oscillation can be stabilized.

REFERENCES:
patent: 4841528 (1989-06-01), Sipes et al.
patent: 5084879 (1992-01-01), Suzuki et al.

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