Method and apparatus for frequency doubling a laser beam

Details Method and apparatus for frequency doubling a laser beam Method and apparatus for frequency doubling a laser beam

1980-11-20

1983-11-01

Davie, James W.

Coherent light generators

Particular beam control device

Nonlinear device

372 21, 372 27, 372 98, H01S 310

Patent

active

044133421

ABSTRACT:
A method and apparatus for providing coincident orthogonally-polarized laser beams having twice the frequency of a fundamental frequency emitted by a laser source is disclosed. A second harmonic generator within a laser resonator cavity causes frequency-doubled laser beams to travel in opposite directions along an axis thereon. One of the beams undergoes a polarization change of substantially 90.degree. and is returned for travel along the laser axis in the same direction as a second frequency-doubled beam which has not undergone a polarization change. The orthogonally-polarized beams are then emitted through an output mirror designed for transmitting beams of twice the frequency of the fundamental beam.

REFERENCES:
patent: 3975693 (1976-08-01), Barry et al.
patent: 4127827 (1978-11-01), Barry

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