High-power all-fiber polarization maintaining picosecond pulsed laser amplifier

Ning Su; Pingxue Li; Chuanfei Yao; Wenhao Xiong

doi:10.1117/12.2539801

12 March 2020 High-power all-fiber polarization maintaining picosecond pulsed laser amplifier

Ning Su, Pingxue Li, Chuanfei Yao, Wenhao Xiong

Proceedings Volume 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 1143702 (2020) https://doi.org/10.1117/12.2539801
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

We report a high-power 10 ps level ultrashort pulsed polarization maintaining (PM) supercontinuum source (SCS) fiber amplifier based on a typical Master Oscillator Pulse Amplification (MOPA) configuration. At the pulse width of 12.1 ps, an average output power of 35.45 W is achieved with the single pulse energy of 2.2 μJ. The output wide spectrum ranging from 1020 nm to 1700 nm has been obtained directly from the Yb-doped fiber amplification (YDFA). But the nonlinear effects in this amplification system are too strong to enhance the average power due to the high peak power of 184 kW. Thus an improved high-power picosecond pulsed PM fiber amplifier is achieved based on a chirped pulse amplification (CPA) configuration. The pulse width is stretched to hundred picosecond scale to reduce the high nonlinear effects and the high peak power by a PM single mode fiber (SMF) stretcher. Only 0.9 m-long PM highly Yb-doped fiber is used in the main-stage amplifier. High average output power of 100.8 W is achieved with repetition rate of 16.68 MHz and pulse width of 280 ps. The central wavelength of the output laser is 1064 nm with 3 dB bandwidth of 2.32 nm. The peak power is 21.58 kW and the single pulse energy is 6.04 μJ, respectively. In addition, the pulse trains are stable without serious distortion and pulse splitting which ensure that the high power PM pulse laser can be used in both fundamental research and industrial fields.

Citation Download Citation

Ning Su, Pingxue Li, Chuanfei Yao, and Wenhao Xiong "High-power all-fiber polarization maintaining picosecond pulsed laser amplifier", Proc. SPIE 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 1143702 (12 March 2020); https://doi.org/10.1117/12.2539801

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KEYWORDS

Fiber amplifiers

Picosecond phenomena

Optical amplifiers

Fiber lasers

Oscillators

Pulsed laser operation

Polarization

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