Abstract
Coexistent intracavity KTiOPO4 optical parametric oscillator (OPO) and stimulated Raman scattering (SRS) processes pumped by an acousto-optical Q-switched Nd:LuxGd3−xGa5O12 (Nd:LGGG) laser were presented for the first time. The Stokes radiations at 1093.2/1125.8 nm and a signal wave of 1570 nm were generated. At an incident pump power of 9.25 W and pulse repetition rate of 3 kHz, the maximum output powers of 375 mW at 1570 nm and 98 mW at 1093.2/1125.8 nm were obtained for the signal wave and Stokes radiations, respectively, corresponding to a total conversion efficiency of 5.1 %. A set of coupled rate equations for coexistent OPO and SRS processes was developed, and the numerical solutions agreed with the experiment results.
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