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JOURNAL OF SYNTHETIC CRYSTALS ›› 2022, Vol. 51 ›› Issue (3): 398-403.

• Research Articles • Previous Articles     Next Articles

Characterization of Third Harmonic Generation of High Power Nanosecond Laser on Nonlinear Optical Crystal Na3La9O3(BO3)8

TANG Guangxin1,2,3, LIU Wang2,3, WANG Lirong2,3, LI Yunfei2,3, ZHANG Ling1,3, ZHANG Guochun2,3   

  1. 1. Key Lab of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    2. Key Laboratory of Functional Crystals and Laser Technology, Beijing Center for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-01-10 Online:2022-03-15 Published:2022-04-11

Abstract: The characteristics of 355 nm ultraviolet (UV) nanosecond (ns) laser generation using third harmonic generation (THG) method based on the new nonlinear optical (NLO) crystal Na3La9O3(BO3)8(NLBO) were investigated. A Q-switched high-power 1 064 nm laser with repetition frequency of 10 kHz and pulse width of 10 ns was applied as the fundamental laser source. A type I phase-matched LBO crystal was used for the second harmonic generation (SHG) and a type I phase-matched NLBO crystal was used for the THG. The output power of 355 nm UV laser is 152.5 mW, and this is the highest output power of 355 nm UV laser generated by NLBO crystal. The variation of the crystal deflection angle with temperature when the NLBO crystal achieved the optimal THG output was studied, and the optimum phase matching angles at different temperatures were modified.

Key words: nonlinear optics, NLBO crystal, third harmonic generation, phase matching angle, ultraviolet laser, laser output power

CLC Number: