Yicheng Zhou, Zhipeng Qin, Xiabing Zhou, Guoqiang Xie. Grating-free 2.8 μm Er:ZBLAN fiber chirped pulse amplifier[J]. High Power Laser Science and Engineering, 2022, 10(6): 06000e41
- High Power Laser Science and Engineering
- Vol. 10, Issue 6, 06000e41 (2022)
Fig. 1. Schematic of the 2.8 μm fiber CPA system. CMS, cladding-mode stripper; ISO, optical isolator; ID, iris diaphragm; Ge, germanium.
Fig. 2. (a) Autocorrelation trace for the pulses after the pre-amplifier. (b) Dependence of output pulse energy on the absorbed pump power in the main amplifier.
Fig. 3. (a) Measured output spectra of the pre-amplifier and the main amplifier. (b) Measured ASE spectrum without seeding signal. (c) Simulated output spectrum and gain spectrum. (d) Simulated output spectrum and spectral phase.
Fig. 4. (a) Variation of the pulse duration with net dispersion of the stretcher and compressor. (b) Autocorrelation trace for the shortest compressed pulses.
Fig. 5. Near-field beam spot of the amplified pulses.
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