Abstract
We report a tunable single-longitudinal-mode laser based on a wedged Nd:YVO4 gain medium and a YVO4 wave-plate. By taking advantage of the natural birefringence of YVO4 and adopting different cutting methods, a wedged Nd:YVO4 crystal acts as an ideal polarizer by the alignment sensitivity of the optical resonator, and a YVO4 crystal is used as a wave-plate by adjusting the temperature. A theoretical analysis of the single- longitudinal-mode operation of such a laser configuration is presented. The wavelength can be continuously tuned by the temperature at approximately 0.025 nm/°C, and the temperature tuning ranges of single-longitudinal-mode operation at pump powers of 1 W and 2 W are from 12 °C to 30 °C and from 11 °C to 26 °C, respectively. The maximum single-longitudinal-mode output power with linear polarization is 762 mW at a pump power of 2.2 W with a slope efficiency of 40%.
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This work was supported by National Natural Science Foundation of China (Grant No. 61605217).
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Communicated by Dieter Meschede.
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Gao, Z., Zhang, W., Yan, B. et al. A tunable single-longitudinal-mode wedge Nd:YVO4 laser with a YVO4 wave-plate. Appl. Phys. B 126, 172 (2020). https://doi.org/10.1007/s00340-020-07523-3
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DOI: https://doi.org/10.1007/s00340-020-07523-3