Measurement of a subpicosecond coherence time in a quasi-steady-state XUV laser

0455712 - FZÚ 2016 RIV US eng J - Journal Article
Le Marec, A. - Meng, L. - Klisnick, A. - Kozlová, Michaela - Nejdl, Jaroslav - Tissandier, F. - Guilbaud, O. - Calisti, A.
Measurement of a subpicosecond coherence time in a quasi-steady-state XUV laser.
Physical Review. A. Roč. 92, č. 3 (2015), "033852-1"-"033852-8". ISSN 1050-2947
R&D Projects: GA MŠMT ED1.1.00/02.0061; GA MŠMT EE2.3.20.0279; GA MŠMT EE2.3.30.0057
EU Projects: European Commission(XE) 284464 - LASERLAB-EUROPE
Grant - others:ELI Beamlines(XE) CZ.1.05/1.1.00/02.0061; LaserZdroj (OP VK 3)(XE) CZ.1.07/2.3.00/20.0279; OP VK 4 POSTDOK(XE) CZ.1.07/2.3.00/30.0057
Institutional support: RVO:68378271
Keywords : X-ray laser * free-electron laser * extreme-ultraviolet * temporal coherence
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 2.808, year: 2014

We have carried out a detailed characterization of the temporal coherence and spectral bandwidth of the Ne-like Zn XUV laser, collisionally pumped in the quasi-steady-state (QSS) regime and operated at saturation. The measured coherence time τc = 680 ± 70 fs is significantly shorter than previously observed with other types of collisional XUV lasers, using the same measurement technique. Additional measurements performed below saturation were used to investigate gain narrowing of the spectral width of the lasing line. Our experimental data are well reproduced by calculations performed with a one-dimensional radiative transfer numerical code, taking the measured gain as an input.
Permanent Link: http://hdl.handle.net/11104/0256338