Picosecond pulses from a cryogenically cooled, composite amplifier using Yb:YAG and Yb:GSAG |
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| Authors: | Rand Darren A Shaw Scot E J Ochoa Juan R Ripin Daniel J Taylor Andrew Fan Tso Yee Martin Hector Hawes Scott Zhang Jim Sarkisyan Samvel Wilson Eric Lundquist Paul |
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| Affiliation: | Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420, USA. drand@LL.mit.edu |
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| Abstract: | A cryogenic Yb amplifier using two laser materials, Gd3Sc2Al3O12 and Y3Al5O12 (YAG), has been used to obtain 70 W average power at 5 kHz pulse repetition frequency; the output was compressed to 1.6 ps, compared with an input compressible to 1.4 ps. The gain broadening obtained by combining two media enables shorter pulses than using Yb:YAG alone but retains the power-scaling advantages of cryogenic Yb:YAG. |
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