US PATENT SUBCLASS 372 / 42
.~.~ Utilizing color centers


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

39  DF  PARTICULAR ACTIVE MEDIA {7}
41  DF  .~ Insulating crystal {1}
42.~.~ Utilizing color centers


DEFINITION

Classification: 372/42

Utilizing color centers:

(under subclass 41) Subject matter wherein color centers are formed within the crystal material which consist of displaced electrons that are trapped in regions of positive charge or of a "hole" or region of electron deficiency, which behaves like a "negative electron" or "positive hole", which can be trapped or localized in well-defined sites and which can impart color to the crystal material.