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A stable red, green and blue output was obtained by frequency doubling and tripling an alternate resonant dual-wavelength Q-switched Nd:YAG laser with an optical superlattice in a LiTaO3 crystal as a frequency converter.
A LiTaO3 optical superlattice with a cascaded structure was used for frequency doubling and tripling of the dual-wavelength output of a Nd:YAG laser. 780 mW of red light, 146 mW of green light and 84 mW of blue light were obtained, which combined 1.01 W of quasi-white light power.
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