Method and apparatus for illuminating a Bragg cell

Details Method and apparatus for illuminating a Bragg cell Method and apparatus for illuminating a Bragg cell

1985-02-01

1987-04-07

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

350358, G01J 300

Patent

active

046555935

ABSTRACT:
A method and apparatus for illuminating a Bragg cell employ a laser which is directed at the Bragg cell with the focus of the laser beam being disposed outside of the Bragg cell, such as immediately preceding the leading edge of the Bragg cell or the crystal containing the Bragg cell. A spectral analyzer with a Bragg cell disposed therein and operated in this manner has a significantly lower noise background thereby decreasing the lower dynamic limit of the analyzer.

REFERENCES:
patent: 3488438 (1970-01-01), Korpel
patent: 3794975 (1974-02-01), Korpel
patent: 4336981 (1982-06-01), Mori
patent: 4390875 (1983-06-01), McNaney
patent: 4500175 (1985-02-01), Schaff et al.
Korpel, Proc. Soc. Photo-Opt. Instrum. Eng., vol. 232, 1980 International Optical Computing Conference, p. 90.
Pearce et al., Optics Comm., V. 19, N. 1, Oct. 1976, p. 65.
Uchida, Opto-Electronics 2 Letters, V. 2, N. 1, Feb. 1970, p. 43.

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