Generation of stretched pulse in dispersion-managed Tm-doped fiber laser

Desheng Zhao; Runmin Liu; Quan Yuan; Hao Xiong; Peng Lin; Tianshu Wang

doi:10.1117/12.2533550

17 May 2019 Generation of stretched pulse in dispersion-managed Tm-doped fiber laser

Desheng Zhao, Runmin Liu, Quan Yuan, Hao Xiong, Peng Lin, Tianshu Wang

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111701U (2019) https://doi.org/10.1117/12.2533550
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

The stretched pulse has narrower pulse duration and high pulse energy than conventional soliton, so that the stretched pulse can improve the potential application values of 2 μm mode-locked fiber laser in remote sensing, mid-infrared source, material processing and other applications. In this paper, the dispersion management method is adopted to accurately manage the dispersion in the cavity using a commercial ultra-high numerical aperture fiber and a common single-mode fiber. Based on the nonlinear polarization rotation technology to achieve mode-locking, when the pump power is set to 645 mW, the polarization controller is adjusted to achieve stretched pulse output with a de-chirped pulse duration of 581 fs. The center wavelength is 1939.26 nm and the 3-dB bandwidth is 21.8 nm. The repetition rate is 28.9 MHz and the signal to noise ratio is 54.21 dB. At the maximum pump power, the direct output power of the resonant cavity is 9.98 mW, and the corresponding single pulse energy is 0.34 nJ.

Citation Download Citation

Desheng Zhao, Runmin Liu, Quan Yuan, Hao Xiong, Peng Lin, and Tianshu Wang "Generation of stretched pulse in dispersion-managed Tm-doped fiber laser", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111701U (17 May 2019); https://doi.org/10.1117/12.2533550

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KEYWORDS

Fiber lasers

Mode locking

Polarization

Single mode fibers

Dispersion

Picosecond phenomena

Solitons

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