CW dual-wavelength Nd:YAG laser at 946 and 938.5 nm and intracavity nonlinear frequency conversion with a CMTC crystal

Physics – Optics

Scientific paper

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Laser, Frequency Conversion, Dual-Wavelength, Cadmium Mercury Thiocyanate, Blue Light

Scientific paper

We report on the efficient CW dual-wavelength operation of a Nd:YAG laser at 946 and 938.5 nm. A total output power of 527 mW was obtained with a slope efficiency of 34%. By inserting a cadmium mercury thiocyanate (CMTC) crystal into the Nd:YAG laser cavity, frequency-doubling of 946 nm and sum-frequency-generation of 946 with 938.5 nm were realised simultaneously. Blue light at 473 and 471.1 nm with an output power of 1.6 mW was obtained. Phase matching calculations were also done for the CMTC crystal.

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