In an optical amplifier, passively wavelength-stabilized pump diodes generate pumping light to excite a gain medium (e.g., rare-earth-ion doped optical fiber or solid-state optical amplifier) near an absorption peak of the gain medium. The gain medium amplifies a pulsed laser signal coupled into the...http://www.google.com/patents/US20070064304?utm_source=gb-gplus-sharePatent US20070064304 - Wavelength-stabilized pump diodes for pumping gain media in an ultrashort pulsed laser system
