Solid state laser device with a bi-cylindrical covexo-convex len

Details Solid state laser device with a bi-cylindrical covexo-convex len Solid state laser device with a bi-cylindrical covexo-convex len

1991-07-16

1993-06-01

Ullah, Akm E.

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 71, 372 75, H01S 310

Patent

active

052166872

ABSTRACT:
A solid-state laser device which employs a bi-cylindrical lens as a focusing lens for focusing excitation light emitted from a semiconductor laser to pump a laser medium. Further, the radius of curvature of each cylindrical surface of the bi-cylindrical lens is selected such that a region of the laser medium to be pumped by a horizontal component of the pumping light and another region of the laser medium to be pumped by a vertical component of the pumping light are contained in a predetermined region of the laser medium. Thereby, output laser light which excels in transverse mode characteristics can be efficiently obtained without increasing the number of surfaces of lenses composing the focusing lens system. Moreover, there is provided a solid-state laser device which can be relatively small-sized and easily regulated.

REFERENCES:
patent: 3735280 (1973-05-01), Johnston, Jr.
patent: 4025157 (1977-05-01), Martin
patent: 4739507 (1988-04-01), Byer et al.

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