Second harmonic generator for obtaining an aberration free plane

Details Second harmonic generator for obtaining an aberration free plane Second harmonic generator for obtaining an aberration free plane

1990-11-27

1992-05-26

Epps, Georgia

Coherent light generators

Particular beam control device

Nonlinear device

385130, 385 15, 385 33, 385 37, 372 66, 372101, 359428, H01S 310

Patent

active

051174332

ABSTRACT:
A second harmonic generator of the present invention utilizes Cerenkov radiation as a useful coherent short-wavelength light source. The second harmonic generator includes an aberration correction means to collimate the second harmonic to form a parallel plane wave having a high flatness. The aberration correction means is provided on an exit end face of a nonlinear waveguide which generates the second harmonic, and a glued cone prism, a cone prism having a conic exit end face changed in accordance with birefringence of the nonlinear waveguide, or a diffraction grating is used as the aberration correction means.

REFERENCES:
patent: 3624406 (1971-11-01), Martin
patent: 4682336 (1987-07-01), Hendrix et al.
patent: 4824220 (1989-04-01), Yamamoto et al.
patent: 4826283 (1989-05-01), Chuangtian et al.
patent: 4852961 (1989-08-01), Yamamoto et al.
patent: 4909596 (1990-03-01), Okazaki et al.
patent: 4962993 (1990-10-01), Okamoto et al.
patent: 4972422 (1990-11-01), Tatsuno

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