Abstract
A high-energy diode-pumped actively Q-switched intracavity Raman laser with SrWO4 as the Raman active medium is demonstrated. By employing ceramic Nd:YAG laser operating at 1444 nm as pump source, first-Stokes Raman generation at 1664 nm is achieved. With a pump power of 27.7 W, a maximum output power of 1.16 W was obtained at a pulse repetition rate of 10 kHz, corresponding to an optical conversion efficiency of 4.2 %. The maximum pulse energies of as high as 266, 150.5, 189 and 116 µJ were achieved at the pulse repetition frequency of 1, 2, 5 and 10 kHz.
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