Abstract
We present a high-power diode-pumped laser operating at cryogenic temperature (). A laser output power of at was extracted for a pump power of . The corresponding global extraction efficiency (versus absorbed pump power) is 65%. The laser small signal gain was found to be equal to 3.1. The laser wavelength could be tuned between 990 and with peaks that correspond well to the structure of the gain cross-section spectra registered at low temperature.
© 2010 Optical Society of America
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