Upconversion pumped lasers

Details Upconversion pumped lasers Upconversion pumped lasers

1990-10-30

1991-06-04

Scott, Jr., Leon

Coherent light generators

Particular pumping means

372 41, H01S 309

Patent

active

050220403

ABSTRACT:
A laser incorporating a laser medium disposed within a laser cavity and a pumping arrangement for selectively applying excitation energy to said laser medium. The laser medium contains upconverting material of the type which allows for the exchange of energy between electrons of the lasing ions at a given energy state below the meta-stable initial lasing state so that some of said exchanging electrons are upconverted to energy states at or above the meta-stable initial lasing state. The pumping arrangement applies energy of suitable wavelength and intensity for elevating electrons from energy levels below the given state to that state in sufficient numbers to support substantial upconversion and the resulting lasing.

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Gomelauri et al.; Single-Mode Q Switched CaF.sub.2 :Er.sup.+3 Laser Jour. Quant. Elect., vol. 6, No. 3; p. 341; Mar. 1976.
"Erbium-Doped CaF.sub.2 Crystal Laser Operation at Room Temp." Batygov et al.; Sov. Jour. Quant. Elect.; vol. 4, No. 12, Jun. 75.

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