Prof. Shengping Chen Profile

Prof. Shengping Chen

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Proceedings Article | 2 December 2020 Paper

Experimental research of supercontinuum generation in a 1030nm fiber amplifier

Bo Li, Shengping Chen

Proceedings Volume 11717, 1171728 (2020) https://doi.org/10.1117/12.2587256

KEYWORDS: Fiber amplifiers, Optical amplifiers, Pulsed laser operation, Fiber lasers, Amplifiers, Supercontinuum generation, Signal processing, Solitons, Raman spectroscopy, Optical fibers

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This paper reports the experimental research of supercontinuum (SC) generation in a 1030 nm fiber amplifier for the first time. The ytterbium-doped fiber amplifier designed based on the 1030 nm seed laser is used to pump the passive fiber to obtain the SC output. In this paper, the effects of the pulse width and repetition frequency of the seed laser on the SC output power and spectral characteristics, and the influence of the passive fiber length on the SC output characteristics are experimentally researched. The experimental results show that under the condition that the peak power of the amplifier is basically the same, the output power of the SC spectrum is basically unchanged by increasing the pulse width and reducing the repetition frequency of the seed laser, but the ability of the spectrum to broaden toward the edge of the long-wavelength becomes stronger and the long-wavelength band in the spectrum has a higher proportion of the optical power. Under the conditions that pulse width and repetition frequency of the seed laser and the output power of the amplifier are constant, the longer the length of the passive fiber, the stronger the ability of the spectrum to broaden toward the edge of the long-wavelength. However, a too long passive fiber will transfer the excessive power to more than 2μm, which is not conducive to the further increase of the output power due to the introduction of more losses.

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