US PATENT SUBCLASS 372 / 91
.~ With depopulation of lower states

Current as of: June, 1999
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372 /   HD   COHERENT LIGHT GENERATORS

69  DF  PARTICULAR PUMPING MEANS {5}
91.~ With depopulation of lower states

DEFINITION

Classification: 372/91

With depopulation of lower states:

(under subclass 69) Subject matter wherein the specified pumping means includes means for selectively depumping a lower level to achieve the required population inversion.