Sl. Huang et al., POLARIZATION-DEPENDENT PERIODIC PULSE OSCILLATION IN A DIODE-LASER-PUMPED AND INTRACAVITY FREQUENCY-DOUBLED ND-WO4 LASER, Applied optics, 37(12), 1998, pp. 2397-2401
We demonstrate that two cross-polarized longitudinal modes can have 50
% higher conversion efficiency than two parallel-polarized longitudina
l modes in a diode-laser-pumped and intracavity frequency-doubled Nd:W
O, laser when operated under periodic pulse oscillation. Through simul
ations of the rate equations for primary frequency intensities and gai
ns, we also verify that this effect can be attributed to gain competit
ion and complementary conversion coefficient between second-harmonic a
nd sum-frequency generations. (C) 1998 Optical Society of America.