High energy narrow linewidth pulsed single frequency fiber laser based on backward pumping

Zhengfei Mo; Yue Tao; Pengrui Kang; Kun Jin; Can Li; Man Jiang; Jinyong Leng; Pu Zhou

doi:10.1117/12.3038947

11 October 2024 High energy narrow linewidth pulsed single frequency fiber laser based on backward pumping

Zhengfei Mo, Yue Tao, Pengrui Kang, Kun Jin, Can Li, Man Jiang, Jinyong Leng, Pu Zhou

Proceedings Volume 13287, Nineteenth National Conference on Laser Technology and Optoelectronics; 1328712 (2024) https://doi.org/10.1117/12.3038947
Event: Nineteenth National Conference on Laser Technology and Optoelectronics, 2024, Shanghai, China

Abstract

Narrow linewidth pulsed single-frequency fiber laser has the characteristics of excellent coherence and high peak power, and has been widely used in coherent LiDAR, precision measurement and nonlinear frequency conversion. In this work, energy scaling of single-frequency laser with long pulse duration and low repetition rate is demonstrated through leveraging an all-fiber amplifier based on polarization-maintaining (PM) large mode area tapered Yb-doped fiber. With dedicate synchronous pulse pumping for suppressing the inter-pulse ASE effect, and pre-shaping of the seed pulse for compensating the distortion of temporal profile, a 1064nm pulsed single-frequency laser output with an energy of 370mJ is realized with a repetition rate of 100Hz. In addition, the rectangle pulse shape is well maintained with a duration of 1.1ms. It is believed that the obtained result represents the highest energy ever reported for pulsed single-frequency fiber lasers.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhengfei Mo, Yue Tao, Pengrui Kang, Kun Jin, Can Li, Man Jiang, Jinyong Leng, and Pu Zhou "High energy narrow linewidth pulsed single frequency fiber laser based on backward pumping", Proc. SPIE 13287, Nineteenth National Conference on Laser Technology and Optoelectronics, 1328712 (11 October 2024); https://doi.org/10.1117/12.3038947

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