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Broadband femtosecond spectroscopic ellipsometry
- 1.0547611 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Richter, Steffen - Rebarz, Mateusz - Herrfurth, O. - Espinoza Herrera, Shirly J. - Schmidt-Grund, R. - Andreasson, Jakob
Broadband femtosecond spectroscopic ellipsometry.
Review of Scientific Instruments. Roč. 92, č. 3 (2021), č. článku 033104. ISSN 0034-6748. E-ISSN 1089-7623
Grant CEP: GA MŠMT EF16_019/0000789; GA MŠMT EF15_003/0000447
Grant ostatní: OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789; OP VVV - ELIBIO(XE) CZ.02.1.01/0.0/0.0/15_003/0000447
Výzkumná infrastruktura: ELI Beamlines III - 90141
Institucionální podpora: RVO:68378271
Klíčová slova: ellipsometry * pump-probe spectroscopy * optical properties
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 1.843, rok: 2021
Způsob publikování: Open access
We present a setup for time-resolved spectroscopic ellipsometry in a pump-probe scheme using femtosecond laser pulses. As a probe, the system deploys supercontinuum white light pulses that are delayed with respect to single-wavelength pump pulses. A polarizer-sample-compensator-analyzer configuration allows ellipsometric measurements by scanning the compensator azimuthal angle. The transient ellipsometric parameters are obtained from a series of reflectance-difference spectra that are measured for various pump-probe delays and polarization (compensator) settings. The setup is capable of performing time-resolved spectroscopic ellipsometry from the near-infrared through the visible to the near-ultraviolet spectral range at 1.3 eV-3.6 eV. The temporal resolution is on the order of 100 fs within a delay range of more than 5 ns.
Trvalý link: http://hdl.handle.net/11104/0323820
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