Coherent light generators – Particular pumping means
Patent
1991-12-02
1993-09-14
Epps, Georgia Y.
Coherent light generators
Particular pumping means
372 41, 372 75, 372 34, 372 99, 372 70, H01S 309
Patent
active
052456234
ABSTRACT:
An upconversion system and method for producing red, green and/or blue emissions in response to an infrared pump is operable at room temperatures. Implemented either as a laser or as phosphors, the host medium has a hexagonal CsNiCl.sub.3 -type crystal structure, a phonon wave number less than 200 cm.sup.31 1, and a rare earth dopant occupying paired lattice vacancies. The host medium has the formulation AMX.sub.3, where A is a monovalent metal, M is a divalent metal and X is a halogen; the system has been demonstrated with CsCdBr.sub.3 :Er. Green, blue and red emissions are stimulated with infrared pumps of about 800 nm, 980 nm and simultaneous 800/980 nm, respectively.
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Denson-Low W. K.
Duraiswamy V. D.
Epps Georgia Y.
Hughes Aircraft Company
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