Abstract
The pulse duration of a burst-mode 100 W Nd-doped picosecond amplifier is nonlinearly compressed in a multi-pass cell device. The spectral broadening and pulse compression are investigated theoretically. The spectral bandwidth is broadened from 0.13 to 3.28 nm experimentally, corresponding to a broadening factor of 25.2. The pulse duration is compressed from 14.2 to 0.99 ps, corresponding to a compression factor of 14.3. The compressed pulse duration of four successive pulses are theoretically estimated to be 0.98 ps, 1.47 ps, 1.86 ps, and 3.07 ps, respectively. The laser power after the grating pair compressor is 72 W. Therefore, the total efficiency of our system reaches 72%. The beam quality after the MPC unit is almost preserved with a M2 value of 1.38 × 1.40.
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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
Change history
12 June 2023
A Correction to this paper has been published: https://doi.org/10.1007/s00340-023-08047-2
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Acknowledgements
This work was supported by National Natural Science Foundation of China (61925507, 62075227, 62205351, 22227901), Shanghai Rising-Star Program (21QA1410200), Youth Innovation Promotion Association CAS (2020248).
Funding
National Natural Science Foundation of China, 61925507, 62075227, 62205351, 22227901, Shanghai Rising-Star Program, 21QA1410200, Youth Innovation Promotion Association of the Chinese Academy of Sciences, 2020248.
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JS, YP and YL contributed to the design and experimental schemes. JS, GL, LS, YL and JS performed the experiments and are responsible for the data processing. JS, YP and LS contributed to write and edit the manuscript. All authors reviewed the manuscript.
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Song, J., Peng, Y., Luo, G. et al. Spectral broadening of a burst-mode 100 W Nd-doped picosecond amplifier in a multi-pass cell device. Appl. Phys. B 129, 86 (2023). https://doi.org/10.1007/s00340-023-08032-9
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DOI: https://doi.org/10.1007/s00340-023-08032-9