Laser with variable emission wavelength

Details Laser with variable emission wavelength Laser with variable emission wavelength

1985-12-19

1988-05-03

LaRoche, Eugene R.

Coherent light generators

Particular beam control device

Tuning

350312, H01S 310

Patent

active

047425245

ABSTRACT:
A laser with variable wavelength contains, as laser-active material in the laser resonator, a mixture consisting of a first substance present as granulate and of a fluid (liquid or gaseous) second substance. One of these substances is laser-active. The course of the dispersion curves (11-12, and 13-14, respectively) of the indices of refraction of the two substances is dependent on temperature and/or pressure or density, and the curves have at least one point of intersection. When the laser is excited, it emits at a wavelength (.lambda..sub.1, .lambda..sub.2) which corresponds to the point of intersection of the dispersion curves. The temperature and/or pressure or density of the mixture of substances within the laser resonator is varied for controlled selection of the emission wavelength (.lambda..sub.1, .lambda..sub.2).

REFERENCES:
patent: 3586417 (1971-06-01), Fields
patent: 3888646 (1975-06-01), Kuriyama et al.
patent: 4501470 (1985-02-01), Yeh
Gans et al., "Optically Homogeneous Mixed Laser", C.R. Acad. Sci. Ser. B. (France), vol. 270, No. 21, pp. 1343-1346, May 1970.
Cloupeau et al., "Visualization . . . Effect", Applied Optics, vol. 12, No. 2, pp. 198-204, Feb. 2, 1973.

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