Amplified characteristics and supercontinuum generation of square-wave pulse fiber laser

Qingchao Su; Tianshu Wang; Wanzhuo Ma; Qingsong Jia; Yinhao Bai; Zhen Wang; Furen Wang; Chengbo Wang

doi:10.1117/1.OE.57.2.026118

27 February 2018 Amplified characteristics and supercontinuum generation of square-wave pulse fiber laser

Qingchao Su, Tianshu Wang, Wanzhuo Ma, Qingsong Jia, Yinhao Bai, Zhen Wang, Furen Wang, Chengbo Wang

Author Affiliations +

Optical Engineering, Vol. 57, Issue 2, 026118 (February 2018). https://doi.org/10.1117/1.OE.57.2.026118

Abstract

We experimentally studied a passive mode-locked square-wave fiber laser with net-normal dispersion by using a nonlinear amplifying loop mirror. The output pulse width of the square-wave pulse (SWP) can be extended with the increasing of the pump power as well as single pulse energy. The SWP can be amplified without shape distortion when the mode-locked laser is injected into an erbium-ytterbium codoped fiber amplifier. Then, by inputting the amplified SWPs into a single mode fiber (SMF), a supercontinuum (SC) can be observed with the spectral range of about 1550 to 1850 nm. Broader and flatter SC with the 20-dB spectral range of about 1550 to 1950 nm can also be generated using a segment of dispersion-shifted fiber instead of SMF.

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Qingchao Su, Tianshu Wang, Wanzhuo Ma, Qingsong Jia, Yinhao Bai, Zhen Wang, Furen Wang, and Chengbo Wang "Amplified characteristics and supercontinuum generation of square-wave pulse fiber laser," Optical Engineering 57(2), 026118 (27 February 2018). https://doi.org/10.1117/1.OE.57.2.026118

Received: 7 September 2017; Accepted: 24 January 2018; Published: 27 February 2018

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