Lasing threshold definitions

Lasing threshold

A good empirical discussion of laser loss quantification is given in the book by W. Koechner. ...
Found on http://en.wikipedia.org/wiki/Lasing_threshold

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lasing threshold

the lowest excitation input power level at which the output of a laser is dominated by stimulated emission rather than spontaneous emission
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-06-18

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