Kagome-fiber prism compressor combination for Yb
- Spectral broadening in hollow-core fibers is an important tool for pulse compression of low-peak power laser pulses, especially for Yb-based lasers. Here, we present a pulse compression scheme to reduce the pulse duration of a commercial Yb:KGW laser operating at 100 kHz repetition rate and 40 mu J pulse energy from 390 to 38 fs. The spectral broadening is accomplished using a krypton-filled Kagome-type fiber. We report broadened spectra for variable Kr-pressures and input powers. At optimal settings of 8 bar Kr-pressure and 3.3 W input power, the bandwidth of the pulse at the -10 dB level increased from 9.5 to 85 nm corresponding to a Fourier limit of 26 fs. A simple SF10 prism compressor is used to reduce the accumulated chirp and shortens the fiber output from about 500 to 38 fs. In addition to the spectral broadening, a pressure dependent change of the polarization is observed.
Author details: | Dennis MayerORCiDGND, Christian T. Matthaei, Axel HeuerORCiDGND, Markus GührORCiDGND |
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DOI: | https://doi.org/10.1088/2040-8986/aafdf6 |
ISSN: | 2040-8978 |
ISSN: | 2040-8986 |
Title of parent work (English): | Journal of optics |
Subtitle (English): | KGW laser pulse compression to sub-40fs |
Publisher: | IOP Publ. Ltd. |
Place of publishing: | Bristol |
Publication type: | Article |
Language: | English |
Date of first publication: | 2019/01/25 |
Publication year: | 2019 |
Release date: | 2021/04/19 |
Tag: | photonic crystal fibers; pulse compression; ultrafast optics |
Volume: | 21 |
Issue: | 2 |
Number of pages: | 6 |
Funding institution: | Volkswagen FoundationVolkswagen |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |