Unidirectionally operating laser apparatus using semimonolithic

Details Unidirectionally operating laser apparatus using semimonolithic Unidirectionally operating laser apparatus using semimonolithic

1998-05-27

2000-05-16

Lee, John D.

Coherent light generators

Particular resonant cavity

Folded cavity

372 66, 372105, 372106, H01S 3083

Patent

active

060646845

ABSTRACT:
A unidirectionally operating laser apparatus using a semi-monolithic ring cavity having a compact structure capable of achieving a high frequency stability and a high-speed laser frequency tuning and modulation. The laser apparatus includes a laser active medium having a curved surface exhibiting an anti-reflection characteristic for a pump laser beam from a pump laser incident thereon while exhibiting a high reflection characteristic for an oscillating laser beam, a planar surface exhibiting an anti-reflection characteristic for the oscillating laser beam, and an optically-active polarization rotator attached to one side portion of the planar surface. The laser apparatus also includes an output mirror separated from the laser active medium, the output mirror having a curved surface with a coating exhibiting a higher reflectance coefficient for S-polarized beams than that for P-polarized beams, and a piezo-electric transducer. The laser apparatus is applicable to a variety of scientific fields using continuous-wave wavelength-tunable lasers.

REFERENCES:
patent: 4747111 (1988-05-01), Trutna, Jr. et al.
patent: 4764933 (1988-08-01), Kozlovsky et al.
patent: 5007065 (1991-04-01), Trutna, Jr.
patent: 5177764 (1993-01-01), Nilsson
patent: 5862164 (1999-01-01), Hill

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