Laser beam generating apparatus

Details Laser beam generating apparatus Laser beam generating apparatus

1992-04-08

1993-09-14

Davie, James W.

Coherent light generators

Particular beam control device

Nonlinear device

372 21, 372 92, 372105, H01S 310

Patent

active

052456188

ABSTRACT:
A laser beam generating apparatus which is easy to manufacture and simple in adjusting operation. The laser beam generating apparatus comprises a light source having a narrow active layer for generating pumping laser beam, a laser medium for receiving the pumping laser beam to form a heat lens therein and generate a fundamental wave laser beam, a non-linear optical crystal element having a face inclined with respect to an optical axis of the fundamental wave laser beam for receiving the fundamental wave laser beam to generate secondary harmonic laser beam, a quarter wavelength plate for suppressing coupling between two polarization modes of the fundamental wave laser beam, and a pair of planar reflecting means for reflecting the fundamental wave laser beam back into the laser medium. The laser medium, non-linear optical crystal element, quarter length plate and planar reflecting means cooperate to constitute a light resonator. The optical axis of the pumping laser beam is adjusted in a direction perpendicular to the optical axis.

REFERENCES:
patent: 4048515 (1977-09-01), Liu
patent: 4910740 (1990-03-01), Oka
patent: 5181214 (1993-01-01), Berger et al.

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