1 kHz single-frequency injection-seeded Er:YAG laser with an optical feedback
A novel 1 kHz single-frequency Q-switched Er:YAG laser pumped by a 1470 nm laser diode (LD) is demonstrated. The 500 ns, 5.52 mJ single-frequency diffraction-limited pulses are obtained by using a ‘Ramp-fire’ injection-seeding technique and an optical feedback architecture. The half-width of the pulse spectrum is measured to be 1.47 MHz by using the heterodyne technique. The beam quality M2 factors are measured to be 1.18 and 1.24 in x and y directions, respectively.
Department of Opto-Electronics, Beijing Institute of Technology
Beijing Institute of Technology
Zhang Yixuan,Gao Chunqing,Wang Qing,Na Quanxin,Zhang Meng,gao mingwei,Huang Shuai. 1 kHz single-frequency injection-seeded Er:YAG laser with an optical feedback[J].Chinese Optics Letters,2019,17(3):03.