Research on LD pumped 1.06 μm burst-mode laser and the amplification systems

Jialin, 段加林 Duan; Xudong, 李旭东 Li; Wentao, 武文涛 Wu; Sen, 林 森 Lin; Rongwei, 樊荣伟 Fan; Zhiwei, 董志伟 Dong; Zhigang, 周志刚 Zhou; Deying, 陈德应 Chen

doi:10.3788/irla201948.0105003

Cited by 3 publications

(1 citation statement)

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“…The average pump power is 8.4 w and the pump pulse width is 300 μs. A pair of aspheric coupling lenses are used as collimating lenses for reducing spherical aberration and increasing pump power In the optical path, M5 is the pump beam splitter, which can filter the remaining pump light and reflect the weak 1064nm laser to the photodetector PD, so as to generate optical synchronization signal [5][6].…”

Section: Methodsmentioning

confidence: 99%

885nm-LD end-pumped burst-mode laser

Yao

Fang

Gao

et al. 2022

Seventeenth National Conference on Laser Technology and Optoelectronics

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An 885nm LD end-pumped burst-mode laser with high repetition frequency and low thermal effect is introduced in this paper. The laser can solve the problem of high repetition frequency and high energy in the traditional continuous pulse output mode, and can meet the requirements of light source of airborne lidar well. The laser adopts the main oscillating power amplification (MOPA) structure. The oscillating stage uses 885nmLD pulse pumped Nd:YAG crystal, which can reduce the thermal power consumption of the laser. The electro-optic Q-switch is used for intra-cavity modulation, and the output pulse train with a repetition frequency of 4Hz, each pulse train contains 60 sub-pulses with a repetition frequency of 1kHz.Finally, the fundamental frequency light with central wavelength of 1064nm, sub-pulse repetition frequency of 1kHz, single pulse energy of 6.1mJ and beam quality is obtained. In the amplification stage, 885nm end-pumped Nd: YAG crystal was used. After one-way amplification, the laser output with sub-pulse energy of 15.7mJ, pulse width of 12ns and beam quality was obtained.

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Section: Methodsmentioning

confidence: 99%