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A diode-end-pumped electro-optic (EO) Q-switched green laser operating at the repetition rate of 20 kHzis reported. A block of La_3Ga_5SiO_(14) (LGS) single crystal is used as a Q-switch and the type Ⅰ phase-matching LiB_3O_5 (LBO) is used as the nonlinear crystal in the second harmonic generation. The 2.3-Waverage power of 532-nm green laser is obtained at the repetition rate of 20 kHz with the pulse width asshort as 10 ns. When the output power is about 1.5 W, the measured power fluctuation is less than 1.4%(root-mean-square, RMS) with the beam quality factor of M~2 < 2 in both orthogonal directions.
A diode-end-pumped electro-optic (EO) Q-switched green laser operating at the repetition rate of 20 kHz is reported. A block of La_3Ga_5SiO_ (14) (LGS) single crystal is used as a Q-switch and the type I Phase-matching LiB_3O_5 (LBO) is used as the nonlinear crystal in the second harmonic generation. The 2.3-Waverage power of 532-nm green laser is obtained at the repetition rate of 20 kHz with the pulse width asshort as 10 ns. output power is about 1.5 W, the measured power fluctuation is less than 1.4% (root-mean-square, RMS) with the beam quality factor of M ~ 2 <2 in both orthogonal directions.