Low-temperature Raman laser apparatus

Details Low-temperature Raman laser apparatus Low-temperature Raman laser apparatus

1994-12-06

1996-04-02

Bovernick, Rodney B.

Coherent light generators

Particular temperature control

Liquid coolant

372 3, H01S 330, H01S 304

Patent

active

055047653

ABSTRACT:
A low-temperature Raman laser apparatus that avoids an increase in the pump light power, which would otherwise be needed under room temperature conditions, and eliminates the problems of instability of the equipment and complicatedness of the operation under liquid nitrogen cooling conditions and also lowers the cost, which has heretofore been high due to the consumption of liquid nitrogen, and that is capable of stably and efficiently effecting Raman conversion. The low-temperature Raman laser apparatus has a Raman cell (1) filled with a Raman conversion medium to convert the wavelength of incident pump light by the Raman conversion action of the Raman conversion medium. A heat absorbing member (2) or (3), through which a brine cooled by a brine refrigerator (4) circulates, is provided around the Raman cell (1) to cool the Raman conversion medium to a temperature in the range of from 200.degree. K. to 300.degree. K.

REFERENCES:
patent: 4194170 (1980-03-01), Kurnit
patent: 5012481 (1991-04-01), Casteleiro
Trutna et al., "Multipass Raman Gain Cell" Applied Optics vol. 19, No. 2 pp. 301-312 (Jan 15, 1980).

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