Frequency-stabilized 1550-nm single-frequency all-fiber pulsed laser for coherent Doppler lidar

Wei Yan; Songsong Sun; Lisha Wang; Minzhe Liu; Kun Zhao; Menglin Liu; Ruizhan Zhai; Feng Zhang; Jinao Yang

doi:10.1117/12.3005741

24 November 2023 Frequency-stabilized 1550-nm single-frequency all-fiber pulsed laser for coherent Doppler lidar

Wei Yan, Songsong Sun, Lisha Wang, Minzhe Liu, Kun Zhao, Menglin Liu, Ruizhan Zhai, Feng Zhang, Jinao Yang

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 1293515 (2023) https://doi.org/10.1117/12.3005741
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

In this work, an all-fiber high-power cascaded master-oscillator power amplifier (MOPA) system emitting frequency-stabilized single-frequency laser pulses at 1550 nm is presented. An external cavity laser diode with a narrow linewidth of 5 kHz is used as the seed source. Owing to the use of frequency locking components and a matched closed-loop system, the seed source has stable output frequency and power. The on-off extinction ratio of 80 dB is achieved by using digital and analog acousto-optic modulators in series. Then the seed laser is amplified by a three-stage cascaded all-fiber amplifier consisting of two pre-amplifiers and one main amplifier. The MOPA system delivers 200-ns laser pulses with a peak power of 800 W at a repetition rate of 10 kHz. The output laser has an operating linewidth close to the transform-limited. The polarization-extinction ratio is 20 dB, and the optical signal-to-noise ratio is higher than 45 dB. The monolithic all-fiber Erbium-Ytterbium co-doped pulsed fiber amplifier can be used as the high-energy radar transmitter of compact long-distance coherent Doppler lidar systems.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wei Yan, Songsong Sun, Lisha Wang, Minzhe Liu, Kun Zhao, Menglin Liu, Ruizhan Zhai, Feng Zhang, and Jinao Yang "Frequency-stabilized 1550-nm single-frequency all-fiber pulsed laser for coherent Doppler lidar", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 1293515 (24 November 2023); https://doi.org/10.1117/12.3005741

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KEYWORDS

Pulse signals

Pulsed laser operation

Fiber lasers

Laser stabilization

Laser applications

Modulation

Laser amplifiers

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