Efficient self-Raman frequency conversion from a diode-pumped actively Q-switched Nd:YVO4 laser at 1064 nm to Stokes emission at 1176 nm is achieved for the first time to the author's knowledge. With a 0.2-at.% Nd:YVO4 crystal, greater than 1.5 W of power at a wavelength of 1176 nm at a repetition rate of 20 kHz was generated with a diode pump power of 10.8 W, corresponding to a conversion of 13.9%. Pulse width and peak power were 18 ns and 4.2 kW, respectively.
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Y. F. Chen (2004) studied this question.
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