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Tunable Mid-infrared Radiation by Singly Resonant Optical S. DAS, S. GANGOPADHYAY, C. GHOSH and G.C. BHAR Tunable mid-infrared radiation by singly resonant optical parametric oscillation based on KTA crystal pumped by Gaussian shape beam from Q-switched Nd:YAG laser has been demonstrated. Threshold of oscillation energy at different idler wavelengths at different cavity lengths have been measured. Idler energy has also been measured with increase in incident pump beam energy. 1.2% energy conversion efficiency at 4.9 micron has been achieved. |
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