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Role of dispersion ...
Role of dispersion and compression ratio on the temporal contrast of SPM-broadened post-compressed pulses
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- Escoto, Esmerando (författare)
- German Electron Synchrotron (DESY)
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- Viotti, Anne Lise (författare)
- Lund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,German Electron Synchrotron (DESY)
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- Alisauskas, Skirmantas (författare)
- German Electron Synchrotron (DESY)
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- Tunnermann, Henrik (författare)
- German Electron Synchrotron (DESY)
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- Seidel, Marcus (författare)
- German Electron Synchrotron (DESY)
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- Dudde, Katharina (författare)
- German Electron Synchrotron (DESY)
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- Manschwetus, Bastian (författare)
- German Electron Synchrotron (DESY)
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- Hartl, Ingmar (författare)
- German Electron Synchrotron (DESY)
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- Heyl, Christoph M. (författare)
- GSI Helmholtz Centre for Heavy Ion Research,German Electron Synchrotron (DESY),Helmholtz Institute Jena
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(creator_code:org_t)
- 2021
- 2021
- Engelska.
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Ingår i: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021. - 9781665418768
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Nonlinear pulse post-compression, mainly enabled by self-phase modulation (SPM), opens new avenues towards high peak power laser pulses at high average power while bypassing the need for a gain medium with large bandwidth. However, SPM-induced spectral broadening typically introduces spectral amplitude modulations as well as a chirp of third and higher orders, limiting the temporal contrast of the compressed pulse. While some recent works address this issue and discuss mitigation strategies [1] , [2] , not much attention has been devoted to the physical processes and limitations that determine the temporal contrast of post-compressed pulses. As novel compression techniques expand the achievable compression ratio [3] , it is increasingly important to fully understand the underlying pulse quality limitations. Here, we outline the role of two important characteristics - dispersion and compression ratio - on the temporal quality of post-compressed pulses. Using both numerical simulations as well as experimental tests employing a gas-filled multi-pass cell (MPC), we study the temporal contrast of post-compressed pulses over large compression-ratio and dispersion range. Using a 730 fs input pulse we were able to generate a 55 fs post-compressed pulse with up to 78% energy contained in the main compressed pulse (defined via the first local minima near the highest peak) against its picosecond background.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- kon (ämneskategori)
- ref (ämneskategori)
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