Abstract

We present a high-power diode-pumped Yb:CaF2 laser operating at cryogenic temperature (77K). A laser output power of 97W at 1034nm was extracted for a pump power of 245W. 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 1052nm 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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