Laser system having frequency doubling

Details Laser system having frequency doubling Laser system having frequency doubling

1976-02-09

1978-01-10

Miller, Jr., Stanley D.

Oscillators

Molecular or particle resonant type

350157, H15

Patent

active

040681904

ABSTRACT:
A laser system for ocean radar applications having a resonant chamber for producing a pair of homogenized, singularly polarized output beams having identical pulse widths and energies. A quarter wave plate is inserted within the optical path of the resonant chamber and rotates the birefringence effects of a laser crystal positioned within the chamber to generate a pair of homogenized, orthogonally polarized beams. A selected one of the orthogonally polarized beams is transmitted through a half wave plate and joins with the remaining beam for passage through a telescope assembly to minimize the cross-sectional area of the beams. A doubler crystal receives the telescoped beams and doubles the frequency thereof to form the pair of homogenized output beams having light energy in the green spectrum.

REFERENCES:
patent: 3529885 (1970-09-01), Amman
patent: 3564454 (1971-02-01), Hook et al.
patent: 3670258 (1972-06-01), Magnante
patent: 3684350 (1972-08-01), Wentz
patent: 3740663 (1973-06-01), Andringa
patent: 3798571 (1974-03-01), Segre
patent: 3928818 (1975-12-01), White
Oettinger, "Three-mirror double-pass laser", Journal of Applied Physics, . 46, No. 12, Dec. 1975, pp. 5288-5289.

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