Gc. Bhar et al., THE GENERATION OF EFFICIENT TUNABLE COHERENT NEAR-IR RADIATION BY TEMPERATURE-TUNED NONCRITICAL DIFFERENCE-FREQUENCY MIXING IN A LBO CRYSTAL, Journal of physics. D, Applied physics, 29(5), 1996, pp. 1157-1161
Efficient tunable near-infrared radiation (NIR) (1.1-2.2 mu m) has bee
n generated by temperature-tuned non-critical phase-matched (NCPM) dif
ference-frequency mixing of Nd:YAG and tunable dye laser radiation (56
0-710 nm) in a 5 mm LBO crystal. Energy conversion efficiency of 11% a
t 1.54 mu m has been achieved. A large angular and spectral bandwidth
is observed. Temperature-tuned type-II non-collinear phase-matching ha
s also been reported. Comparison with other NIR-generating crystals sh
ows that temperature-tuned NCPM in LBO is superior to other methods.