Observation and optimization of 2 μm mode-locked pulses in all-fiber net anomalous dispersion laser cavity

Wanzhuo Ma; Desheng Zhao; Runmin Liu; Tianshu Wang; Quan Yuan; Hao Xiong; Haiying Ji; Huilin Jiang

doi:10.29026/oea.2020.200001

Article navigation > Opto-Electronic Advances > 2020 Vol. 3 > No. 11 > 200001

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Ma W Z, Zhao D S, Liu R M, Wang T S, Yuan Q et al. Observation and optimization of 2 μm mode-locked pulses in all-fiber net anomalous dispersion laser cavity. Opto-Electron Adv 3, 200001 (2020). doi: 10.29026/oea.2020.200001

Citation:

Ma W Z, Zhao D S, Liu R M, Wang T S, Yuan Q et al. Observation and optimization of 2 μm mode-locked pulses in all-fiber net anomalous dispersion laser cavity. Opto-Electron Adv 3, 200001 (2020). doi: 10.29026/oea.2020.200001

Original Article Open Access

Observation and optimization of 2 μm mode-locked pulses in all-fiber net anomalous dispersion laser cavity

1.
National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
2.
College of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

More Information

^*Corresponding author: T S Wang, E-mail: wangts@cust.edu.cn

Received Date 02 January 2020

Accepted Date 19 February 2020

Available Online 27 November 2020

Published Date 27 November 2020

Abstract

Abstract

We integrally demonstrate 2 μm mode-locked pulses performances in all-fiber net anomalous dispersion cavity. Stable mode-locking operations with the center wavelength around 1950-1980 nm can be achieved by using the nonlinear polarization rotation structure and properly designing the dispersion management component. Conventional soliton is firstly obtained with a total anomalous dispersion cavity. Due to the contribution of commercial ultra-high numerical aperture fibers, net dispersion is reduced to -0.077 ps². So that stretched pulse with 19.4 nm optical bandwidth is obtained and the de-chirped pulse-width can reach 312 fs using extra-cavity compression. Under pump power greater than 890 mW, stretched pulse can evolve into noise-like pulse with 41.3 nm bandwidth. The envelope and peak of such broadband pulse can be compressed with up to 2.2 ps and 145 fs, respectively. The single pulse energy of largely chirped stretched and noise-like pulse can reach 1.785 nJ and 1.53 nJ, respectively. Furthermore, extra-cavity compression can also contribute to a significant increase of peak power.
- fiber lasers /
- mode-locked lasers /
- 2 μm fiber lasers

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References

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