Compact electronic pumping-type semiconductor laser

Details Compact electronic pumping-type semiconductor laser Compact electronic pumping-type semiconductor laser

1991-04-04

1992-06-23

Scott, Jr., Leon

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 74, 372 34, H01S 3091

Patent

active

051250004

ABSTRACT:
A laser having a volume of less than 1 cubic centimeter comprises a semiconductor constructed to permit the emission of a coherent beam of electromagnetic radiation upon the application of an electron beam to one of its surfaces, and an electron bombardment pumping device for applying the electron beam. The electron bombardment device includes at least one microdot emissive cathode cold electron source having a volume less than 1 cm.sup.3. In a preferred embodiment the laser comprises a plurality of electron bombardment devices formed into a matrix or row of microdot cathodes. A focusing device is provided for focusing the electron beams onto a plurality of excitement strips corresponding to a plurality of semiconductors.

REFERENCES:
patent: 3803510 (1974-04-01), Nicoll
patent: 3942132 (1976-03-01), Zinn
patent: 4328443 (1982-05-01), Zappa
patent: 4513308 (1985-04-01), Greene et al.
patent: 4631731 (1986-12-01), Wolter et al.
patent: 4903088 (1990-02-01), Van Opdorp
Soviet Journal of Quantum Electronics vol. 10 No. 6 Jun. 1980.
Soviet Journal of Quantum Electronics vol. 17 No. 9 Sep. 1987.

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