Spectrally shaped chirped pulse amplification of an all-normal dispersion Yb-doped fibre laser

Zaytsev, Alexey; You, Yi-Jing; Huang, Sheng-Wen; Pan, Ci‐Ling

doi:10.1088/1612-202x/aac5ca

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…In 2016, R Y Sun et al reported a 1064 nm CPA system, which achieved a femtosecond pulse with a single pulse energy of 1.5 μJ and a pulse duration of 566 fs in a 30/250 μm YDF [12]. In 2018, Alexey Zaytsev et al presented a similar 1064 nm CPA system utilizing a 30/250 μm YDF, which delivered pulses with an single pulse energy of 8.8 μJ and a pulse duration of 350 fs [13]. In 2019, C Hong et al employed CPA technology in a 40/200 µm Yb-doped large-modearea photonic crystal fiber (LMA-PCF) at a wavelength of 1064 nm.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond chirped-pulse amplification system based on gain-managed nonlinearity regime

Xia,

Zhao,

Hou

et al. 2023

Eighteenth National Conference on Laser Technology and Optoelectronics

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In this work, we employed gain-managed nonlinear amplification (GMNA) technology to achieve a pulse characterized by a smooth spectral profile and an exceptionally wide spectral bandwidth. Then this pulse was injected into a chirped pulse amplification (CPA) system for amplification, and a high energy, narrow pulse duration fiber laser system was successfully built. The initial seed source for system was a self-made mode-locked fiber oscillator that utilized a nonlinear amplifying loop mirror (NALM). This oscillator produced ultrashort pulses with a pulse duration of 10.96 ps at a repetition rate of 11.52 MHz. The spectral width of the mode-locked oscillator was significantly broadened from 5.83 nm to 63.97 nm using GMNA technology. Furthermore, the spectral profile, which initially exhibited severe oscillation structures, was reshaped into a smooth profile through the application of GMNA. Subsequently, the pulse energy was increased through CPA amplification. Finally, in the case of a central wavelength of 1064 nm and a repetition rate of 500 kHz, a pulse with an average power of 20.02 W, a single pulse energy of 40 μJ, a pulse duration of 179 fs, and a peak power of 224 MW was obtained. This fiber laser system has great prospect of application in clinical medicine and precision manufacturing due to its high energy and ultra-short pulse duration.

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Section: Introductionmentioning

confidence: 99%