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19 October 2020 Nonlinear pulse compression of an all-normal-dispersion Yb-fiber laser by a single-mode fiber amplifier
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Abstract

We have successfully compressed the pulse duration of an all-normal-dispersion (ANDi) Yb-fiber laser to sub-100 fs by a single-mode nonlinear fiber amplifier. Through optimizing the input power, prechirp, and the pump power of the amplifier, the pulse duration of the ANDi Yb-fiber laser is compressed to 68 fs when a 2.5-m active fiber is used, although for a 3.5-m active fiber, the pulse duration of the laser can be compressed to 58 fs. We have also shown that a low relative intensity noise is maintained within the nonlinear amplification process. The experimental results prove this ultrashort-pulse-duration and low-noise laser source with moderate output power can be a good candidate for frequency comb, multiphoton imaging, coherent Raman spectroscopy, and other applications.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2020/$28.00 © 2020 SPIE
Xiaorong Gu, Xinru Cao, Yao Li, Haidong Chen, and Youwen Liu "Nonlinear pulse compression of an all-normal-dispersion Yb-fiber laser by a single-mode fiber amplifier," Optical Engineering 59(10), 106105 (19 October 2020). https://doi.org/10.1117/1.OE.59.10.106105
Received: 23 July 2020; Accepted: 5 October 2020; Published: 19 October 2020
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