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High power all-fiber laser with switchable pulsed and continuous operation modes for wind lidar
Author(s): Yinchao Zhang; Xunbao Rui; Pan Guo; He Chen; Siying Chen; Ting Li; Baowei Li
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Paper Abstract

We have designed and demonstrated an all-fiber laser which can switch the operation mode between the pulsed mode and the continuous mode. Under the pulsed operation mode, the maximum output pulse energy is measured to be 120 μJ with a pulse width of 400 ns. The pulse width is continuously adjustable between 100 ns and 600 ns. Under continuous operation mode, the maximum output power is 2 W. Switching between these two operation modes can be done with simple instructions within several milliseconds. Large-mode-area (LMA) fiber amplifiers are adopted to support the high peak power. The LMA fiber amplifiers are coiled in a circle with a diameter of 25 cm and the high order transverse mode are suppressed by the bending loss. The M squared factors of the designed laser are 1.204 on x-axis and 1.293 on y-axis. This laser is optimized for coherent Doppler lidar system that can detect at both the near (within several tens of meters) and far distance (more than a dozen kilometers).

Paper Details

Date Published: 8 July 2019
PDF: 6 pages
Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 110630O (8 July 2019); doi: 10.1117/12.2539886
Show Author Affiliations
Yinchao Zhang, Beijing Institute of Technology (China)
Xunbao Rui, Beijing Institute of Technology (China)
Pan Guo, Beijing Institute of Technology (China)
He Chen, Beijing Institute of Technology (China)
Siying Chen, Beijing Institute of Technology (China)
Ting Li, Beijing Institute of Technology (China)
Baowei Li, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 11063:
Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)

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