Second harmonic generation method and apparatus

Details Second harmonic generation method and apparatus Second harmonic generation method and apparatus

1995-08-29

1997-09-23

Ullah, Akm E.

Coherent light generators

Particular beam control device

Nonlinear device

372 27, 372 29, H01S 310

Patent

active

056712324

ABSTRACT:
A second harmonic generation apparatus provides a polarization element transmitting only light polarized in an extra-ordinary axis direction on the proceeding path of a second harmonic emitted from a resonator. The light polarized in the extra-ordinary axis direction is transmitted to a beam splitter, and a part of the polarized light is fed back to a feedback circuit, so that the temperature of a non-linear birefringent crystalline element inside resonator can be stably controlled and the output second harmonic can be stably produced.

REFERENCES:
patent: 3858056 (1974-12-01), Melamed et al.
patent: 4413342 (1983-11-01), Cohen et al.
patent: 5093832 (1992-03-01), Bethune et al.
patent: 5377212 (1994-12-01), Tatsuno et al.
patent: 5384796 (1995-01-01), Jee
patent: 5495489 (1996-02-01), Lee et al.

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