Chinese Optics Letters, 2011, 9 (7): 071401, Published Online: May. 18, 2011
High-powered millijoule pulse energy Tm3+-doped fiber amplifier at 2.05 \mu m Download: 909次
光纤放大器 合束泵浦 脉冲光纤放大器 掺Tm3+光纤激光 140.3070 Infrared and far-infrared lasers 060.2320 Fiber optics amplifiers and oscillators 060.2390 Fiber optics, infrared 140.3280 Laser amplifiers
Abstract
A high-powered millijoule pulse energy Tm3+-doped fiber amplifier seeded with a Q-switched operation of Tm (4 at.-%), Ho (0.4 at.-%):YVO4 laser is reported. The output characteristics of the amplified laser are studied at the coupled powers of 0.266, 1.24, and 2.65 W. Maximum output power up to 15.7 W is at 10-kHz repetition rate. Nonlinear effects are not observed from the emitting spectrum and the full-width at half-maximum (FWHM) of the pulse duration is reduced from 40.1 to 25.9 ns at 1.57-mJ pulse energy. The beam quality factor M2x=1.9\pm 0.03, M2y=2.1\pm 0.02 at the output power of 14.5 W is measured using the traveling knife-edge method.
Renlai Zhou, Youlun Ju, Yunjun Zhang, Yuezhu Wang. High-powered millijoule pulse energy Tm3+-doped fiber amplifier at 2.05 \mu m[J]. Chinese Optics Letters, 2011, 9(7): 071401.