[13a-B3-1~12] 3.5 Laser system and materials

[13a-B3-4] High-average-power operation of a 100-mJ-class, conductively cooled, Q-switched Tm,Ho:YLF laser

〇Atsushi Sato^1,2, Makoto Aoki², Shoken Ishii², Ryouhei Otsuka^3,2, Kohei Mizutani², Satoshi Ochiai² (1.Tohoku Inst. of Tech., 2.NICT, 3.Tokyo Metropolitan Univ.)

Keywords:laser, diode-pumping, Q-switch

In this study, a high-average-power operation of a conductively cooled, Q-switched Tm,Ho:YLF laser with a pulse energy higher than 100 mJ was demonstrated. When the laser rod was cooled to -80 C, a Q-switched pulse energy of 104 mJ was obtained at a pulse repetition frequency of 70 Hz, corresponding to an average power of 7.28 W. At 50 Hz, the maximum pulse energy reached 125 mJ.