Abstract
We study a continuous-wave sum-frequency blue laser operating at 484 nm. The laser elaborated is based on the intracavity pumping technology. A 912 nm laser produced by an end-pumped Nd:GdVO4 crystal, using an 808 nm fiber-coupled laser diode, is employed to pump an Yb:YAG crystal in the cavity to achieve the simultaneous oscillations in 912 and 1030 nm lasers. An intracavity sum-frequency achieved in a type-I phase-matched BIBO crystal is used to obtain the 484 nm blue laser output. In our experiment, we apply a linear coaxial laser resonator structure. As a result, we obtain a sumfrequency blue laser output of 317 mW at a pump power of 25 W. The slope efficiency of the designed laser is 2.8%, and the beam quality factors are 1.34 in the X direction and 1.36 in the Y direction, respectively, with the power fluctuations about 3.8% within four hours.
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Hu, C., Li, Y. & Sun, X. Nd:GdVO4/Yb:YAG Intracavity Sum-Frequency CW Blue Laser Operating at 484 nm. J Russ Laser Res 41, 664–669 (2020). https://doi.org/10.1007/s10946-020-09922-5
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DOI: https://doi.org/10.1007/s10946-020-09922-5