Broadband femtosecond spectroscopic ellipsometry
نویسندگان
چکیده
We present a setup for time-resolved spectroscopic ellipsometry in pump–probe scheme using femtosecond laser pulses. As probe, the system deploys supercontinuum white light pulses that are delayed with respect to single-wavelength pump A polarizer–sample–compensator–analyzer configuration allows ellipsometric measurements by scanning compensator azimuthal angle. The transient parameters obtained from series of reflectance-difference spectra measured various delays and polarization (compensator) settings. is capable performing near-infrared through visible near-ultraviolet spectral range at 1.3 eV–3.6 eV. temporal resolution on order 100 fs within delay more than 5 ns. analyze discuss critical aspects such as fluctuations probe imperfections optics strategies deployed circumventing related issues.
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2021
ISSN: ['1089-7623', '1527-2400', '0034-6748']
DOI: https://doi.org/10.1063/5.0027219