Chinese Optics Letters, 2019, 17 (3): 031402, Published Online: Mar. 8, 2019   

1  kHz single-frequency, injection-seeded Er:YAG laser with an optical feedback

Author Affiliations
School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Abstract
A novel 1 kHz single-frequency, Q-switched Er-doped yttrium aluminum garnet (Er:YAG) laser pumped by a 1470 nm laser diode 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 full width at half-maximum 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 the x and y directions, respectively.

Yixuan Zhang, Chunqing Gao, Qing Wang, Quanxin Na, Meng Zhang, Mingwei Gao, Shuai Huang. 1  kHz single-frequency, injection-seeded Er:YAG laser with an optical feedback[J]. Chinese Optics Letters, 2019, 17(3): 031402.

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