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Title: A flexible experimental setup for femtosecond time-resolved broad-band ellipsometry and magneto-optics

A versatile experimental setup for femtosecond time-resolved ellipsometry and magneto-optical Kerr effect measurements in the visible light range is described. The apparatus is based on the pump-probe technique and combines a broad-band probing beam with an intense near-infrared pump. According to Fresnel scattering matrix formalism, the analysis of the reflected beam at different polarization states of the incident probe light allows one to determine the diagonal and the off-diagonal elements of the dielectric tensor in the investigated sample. Moreover, the pump-probe method permits to study the dynamics of the dielectric response after a short and intense optical excitation. The performance of the experimental apparatus is tested on CrO{sub 2} single crystals as a benchmark.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Dipartimento di Fisica, Politecnico di Milano, p.zza Leonardo da Vinci 32, 20133 Milano (Italy)
  2. Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487 (United States)
  3. CNR-IFN, Dipartimento di Fisica, Politecnico di Milano, p.zza Leonardo da Vinci 32, 20133 Milano (Italy)
Publication Date:
OSTI Identifier:
22392325
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAMS; CHROMIUM OXIDES; DIELECTRIC MATERIALS; DIELECTRIC TENSOR; ELLIPSOMETRY; KERR EFFECT; MONOCRYSTALS; POLARIZATION; PROBES; TIME RESOLUTION