Femtosecond green and ultraviolet lasers generated using second-harmonic generation based on K3B6O10Br nonlinear optical crystals
Author(s): Zhang, L (Zhang, Ling); Long, Y (Long, Yun); Zhang, M (Zhang, Min); Li, CY (Li, Chunyong); Wang, Y (Wang, Ying); Pan, SL (Pan, Shilie); Zhang, XW (Zhang, Xingwang); Zhang, X (Zhang, Xin)
Source: OPTICAL ENGINEERING Volume: 59 Issue: 5 Article Number: 056107 DOI: 10.1117/1.OE.59.5.056107 Published: MAY 2020
Abstract: We demonstrate the output of femtosecond (fs) green and ultraviolet (UV) lasers through second-harmonic generation using type-I phase-matched K3B6O10Br (KBOB) non-linear optical (NLO) crystals. The wavelengths of the fs green and UV lasers are 515 and 400 nm, respectively. The 1030-nm fs laser is used to pump the KBOB crystal to generate the green output. When the laser pump power reached 880 mW with a repetition rate of 1 kHz, an output power of 235 mW was obtained from the green laser with an optical conversion efficiency of 26.7%. When a pump power of 5.87 W was attained with repetition rate of 10 kHz, a green output power of 1.03 W was generated. The fs UV laser is pumped by an 800-nm fs laser, with 132-mW output power achieved when the pump power was 470 mW with an optical conversion efficiency of 28.1%. The experimental results indicate that the KBOB crystal is a promising NLO crystal for generating fs green and UV lasers because of its excellent NLO properties. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)
Accession Number: WOS:000542976000039
ISSN: 0091-3286
eISSN: 1560-2303