Solid state laser device

Details Solid state laser device Solid state laser device

1994-04-15

1995-03-28

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372101, 372 71, 372 27, 372 6, 372 23, H01S 308

Patent

active

054024382

ABSTRACT:
For high energy density and improved processing performance of a solid-state laser, the product .theta.d of a laser beam with divergence .theta. and beam diameter "d" at the beam waist is reduced. Formation of an non-oscillating region as in an output mirror with a pinhole is prevented by use of a hole-type mirror with a central region having reduced reflectance. For increased range of stable oscillation, a beam expander is interposed between a laser medium and the output mirror. The focused beam of a slab laser is made circular by using a columnar light-guiding path on the output side of the output mirror. A laser beam is more readily admitted into an optical fiber by use of a conical light-guiding path. With a hole-type output mirror, two-component laser output from a slab laser has very small .theta.d values.

REFERENCES:
patent: 3427456 (1969-02-01), Caulfield
patent: 4709368 (1987-11-01), Fukuda et al.
patent: 4907235 (1990-03-01), Kuizenga
patent: 4920541 (1990-04-01), Baumgartner et al.
patent: 5125001 (1992-06-01), Yagi et al.
patent: 5182759 (1993-01-01), Anthon et al.
patent: 5241557 (1993-08-01), Vann

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