Device for producing or amplifying coherent radiation

Details Device for producing or amplifying coherent radiation Device for producing or amplifying coherent radiation

1984-02-03

1986-12-23

Davie, James W.

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 43, H01S 309

Patent

active

046317317

ABSTRACT:
A device for producing or amplifying coherent radiation includes a semiconductor device such as a laser. By means of electrons of high energy produced by a semiconductor cathode of the device, population inversion is obtained in an active layer of the laser structure. In this manner, laser action is obtained, which offers advantages, especially with II-VI materials which emit radiation of a wavelength shorter than the usual III-V materials, and which do not permit the desired population inversion to be obtained in the same manner as in III-V materials, by means of current injection across a pn junction. The semiconductor cathode and the laser structure can be arranged in mutual separation in a vacuum tube or be realized in one semiconductor body. The short-wave laser is especially advantageous for CD,DOR and VLP applications.

REFERENCES:
patent: 3942132 (1976-03-01), Zinn
Bogdan Kevich et al., "Electron-Beam-Pumped ZeSe-ZnS Hetero Laser", Mar. 3, 1976, Soviet Journal Quant-Electron, vol. 6, No. 3, pp. 329-331.
Hurwitz. "Efficient Visible Lasers of CdS.sub.x Se.sub.1-x By Electron-Beam Excitation", May 15, 1966, Applied Physics Letter, vol. 8, No. 10, pp. 243-245.

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