• Infrared and Laser Engineering
  • Vol. 44, Issue 12, 3512 (2015)
Wang Hui*, Zhang Huifeng, and Guo Tao
Author Affiliations
  • [in Chinese]
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    DOI: Cite this Article
    Wang Hui, Zhang Huifeng, Guo Tao. Dual-wavelength eye-safe laser based on Nd:GYSGG/YVO4 intracavity stimulated Raman conversion[J]. Infrared and Laser Engineering, 2015, 44(12): 3512 Copy Citation Text show less

    Abstract

    A compact AO Q-switched dual-wavelength laser operated in 1.5 μm eye-safe region was demonstrated via stimulated Raman scatting of a-cut YVO4 crystal within an end-pumped dual-wavelength Nd:GYSGG laser cavity. The in-band pumping absorption peak and coefficient were measured to conduct efficient pumping, thus overcoming the drawback of short thermal focal length of Nd:GYSGG crystal and scaling up the eye-safe output. 1.44 W of simultaneous output at 1 497 and 1 516 nm was obtained under absorbed pump power of 17.1 W at the pulse repetition rate of 20 kHz, corresponding to a conversion efficiency of 8.4%. The 1 497 nm and 1 516 nm fractions are 0.55 and 0.89 W, respectively, measured after split by a prism. The beam quality factor M2 is 2.4 at the maximum output. Compared with 808-nm traditional pumping, both the laser output power and the beam quality are greatly improved.
    Wang Hui, Zhang Huifeng, Guo Tao. Dual-wavelength eye-safe laser based on Nd:GYSGG/YVO4 intracavity stimulated Raman conversion[J]. Infrared and Laser Engineering, 2015, 44(12): 3512
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