Miniature stimulated raman shifting cell

Details Miniature stimulated raman shifting cell Miniature stimulated raman shifting cell

1996-04-04

1998-06-02

Scott, Jr., Leon

Coherent light generators

Raman laser

372 92, 372 39, 372 98, H01S 330

Patent

active

057612242

ABSTRACT:
A Raman cell for Raman shifting of a laser pump beam, to an output beam of a different wavelength, the cell containing a gaseous Raman medium at a pressure of 100-1000 PSIG. An input window for a pump beam is located at one end of the cell and an output window for a Raman shifted wavelength output beam is located at the cells opposite end. The output window is formed as a plane mirror having an inner face coated with dielectric thin films which provide a high reflectivity for the wavelength of the pump beam and a partial reflectivity at the cell's Raman shifted wavelength. The input window includes at least one lens that forms a converging lens for the pump beam which has a focal length in the Raman medium of about 3/2 of the cell's inner length to substantially focus the pump beam at the center of the cell after it is reflected back by the inner face of the plane mirror.

REFERENCES:
patent: 4868833 (1989-09-01), Stultz et al.
patent: 4933943 (1990-06-01), Narhi et al.
patent: 5265106 (1993-11-01), Garcia et al.
patent: 5566195 (1996-10-01), Heppner et al.

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