首页|Hundred-watt level average power CPA system with all-fiberized laser amplifiers based on CFBG stretcher and CVBG compressor
Hundred-watt level average power CPA system with all-fiberized laser amplifiers based on CFBG stretcher and CVBG compressor
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NSTL
Elsevier
We report on a novel fiber chirped-pulse amplification system with a hundred-watt level average power. All-fiberized laser amplifiers, a chirped fiber Bragg grating stretcher, and a chirped volume Bragg grating compressor make up the system. The chirped fiber Bragg gratings were inscribed in the experiment through the fabrication system built by ourselves, with the parameters fine-tuned during fabrication to match the spectrum after stretching to the source waveband and the spectral width of the chirped volume Bragg grating compressor. A 12 m-long photonic crystal fiber was also used to provide effective spectral bandwidth matching between the preamplifier and the chirped fiber Bragg gratings. Meanwhile, the gain fiber length of the amplifiers was suitably selected, and the overall system's spectral matching was achieved. As a result, a compressed average power of 111.4 W was obtained with a pulse duration of 1.5 ps, resulting in peak power of 4.1 MW. The proposed all-fiberized stretcher and amplifier structure significantly decrease the system's volume, increase the system's stability and dependability, and may be used in various applications.
NSTL
Elsevier
