Intra-Burst Pulse Characterization of a High-Power Post-Compressed Yb:YAG Laser at 100 kHz Repetition Rate
High-average power Ytterbium (Yb) laser systems are playing an increasingly important role in ultrafast science e.g. as pump lasers for optical parametric amplifiers or directly as ultrafast sources. The gain bandwidth of Yb limits the pulse duration to a few 100 fs up to about 1 ps. However, many a...
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Published in | 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) p. 1 |
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Main Authors | , , , , , , , , |
Format | Conference Proceeding |
Language | English |
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IEEE
21.06.2021
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Abstract | High-average power Ytterbium (Yb) laser systems are playing an increasingly important role in ultrafast science e.g. as pump lasers for optical parametric amplifiers or directly as ultrafast sources. The gain bandwidth of Yb limits the pulse duration to a few 100 fs up to about 1 ps. However, many applications, such as attosecond physics or X-ray Free Electron Laser (FEL) science, would greatly benefit from the combination of high average powers with much shorter pulses, achievable via post-compression. Nonlinear pulse post-compression of high-average power Yb lasers employing multi-pass cell (MPC) -based spectral broadening [1] , [2] was recently implemented for two burst-mode pump-probe lasers at the FEL facility FLASH in Hamburg [3] , [4] . For such lasers, precise characterization and control of intra-burst pulse dynamics is crucial as the post-compression process couples input pulse energy instabilities with important output pulse parameters such as spectrum, pulse length and temporal contrast. Here, we demonstrate 100 kHz intra-burst spectrum, phase and temporal contrast characterization of a Yb:YAG Innoslab burst-mode amplifier post-compressed in a gas-filled MPC. Our measurements reveal a stable broadened spectrum and compressed pulse duration within the flat part of the burst, yielding a relative energy content of about 80% in the main compressed fs pulse (250 fs window versus 4 ps background pedestal). |
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AbstractList | High-average power Ytterbium (Yb) laser systems are playing an increasingly important role in ultrafast science e.g. as pump lasers for optical parametric amplifiers or directly as ultrafast sources. The gain bandwidth of Yb limits the pulse duration to a few 100 fs up to about 1 ps. However, many applications, such as attosecond physics or X-ray Free Electron Laser (FEL) science, would greatly benefit from the combination of high average powers with much shorter pulses, achievable via post-compression. Nonlinear pulse post-compression of high-average power Yb lasers employing multi-pass cell (MPC) -based spectral broadening [1] , [2] was recently implemented for two burst-mode pump-probe lasers at the FEL facility FLASH in Hamburg [3] , [4] . For such lasers, precise characterization and control of intra-burst pulse dynamics is crucial as the post-compression process couples input pulse energy instabilities with important output pulse parameters such as spectrum, pulse length and temporal contrast. Here, we demonstrate 100 kHz intra-burst spectrum, phase and temporal contrast characterization of a Yb:YAG Innoslab burst-mode amplifier post-compressed in a gas-filled MPC. Our measurements reveal a stable broadened spectrum and compressed pulse duration within the flat part of the burst, yielding a relative energy content of about 80% in the main compressed fs pulse (250 fs window versus 4 ps background pedestal). |
Author | Viotti, Anne-Lise Alisauskas, Skirmantas Tunnermann, Henrik Heyl, Christoph M. Hartl, Ingmar Manschwetus, Bastian Dudde, Katharina Seidel, Marcus Escoto, Esmerando |
Author_xml | – sequence: 1 givenname: Anne-Lise surname: Viotti fullname: Viotti, Anne-Lise organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 2 givenname: Skirmantas surname: Alisauskas fullname: Alisauskas, Skirmantas organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 3 givenname: Henrik surname: Tunnermann fullname: Tunnermann, Henrik organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 4 givenname: Esmerando surname: Escoto fullname: Escoto, Esmerando organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 5 givenname: Marcus surname: Seidel fullname: Seidel, Marcus organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 6 givenname: Katharina surname: Dudde fullname: Dudde, Katharina organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 7 givenname: Bastian surname: Manschwetus fullname: Manschwetus, Bastian organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 8 givenname: Ingmar surname: Hartl fullname: Hartl, Ingmar organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 – sequence: 9 givenname: Christoph M. surname: Heyl fullname: Heyl, Christoph M. organization: Deutsches Elektronen-Synchrotron DESY,Hamburg,Germany,22607 |
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Snippet | High-average power Ytterbium (Yb) laser systems are playing an increasingly important role in ultrafast science e.g. as pump lasers for optical parametric... |
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SubjectTerms | Free electron lasers Laser theory Power lasers Pulse measurements Stimulated emission X-ray lasers Ytterbium |
Title | Intra-Burst Pulse Characterization of a High-Power Post-Compressed Yb:YAG Laser at 100 kHz Repetition Rate |
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