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The Three-wavelength PR3+:YLF Laser at 604 nm 607 nm and 640 nm with Fabry-Perot Etalon

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Abstract

A three-wavelength Pr3+:YLF laser at 604 nm, 607 nm and 640 nm simultaneously output by Fabry-Perot (F-P) etalon has been obtained. A 444 nm blue laser diode is used for pumping the Pr3+:YLF crystal, and a 0.1 mm F-P etalon is inserted in the resonator to select wavelength. The theoretical model of three-wavelength Pr3+:YLF laser is established, by adjusting the tilt angle of the etalon, the transmittances of the different wavelengths can be controlled, and the threshold values can be made to equalize by controlling the loss among different wavelengths. In the experiment, when the tilt angle of etalon is 9° and the optimized length of resonator is 48 mm, the total output power of 25 mW at the three-wavelength is achieved at incident pump power of 7.5 W.

© 2018 Optical Society of Korea

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