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Czechoslovak Journal of Physics

, Volume 46, Supplement 2, pp 1111–1112 | Cite as

Picosecond photoresponse of YBa2Cu3O7−x thin films

  • Mikael Lindgren
  • Marc Currie
  • Carlo Williams
  • Steven H. Moffat
  • Robert A. Hughes
  • Frank A. Hegmann
  • John S. Preston
  • Thomas Y. Hsiang
  • Roman Sobolewski
HTSC—Electromagnetic Response, Spin Properties

Abstract

The photoresponse of current-biased YBa2Cu3O7−x (YBCO) microbridges, patterned in 100-nm-thick, high-quality epitaxial films on LaAlO3, has been characterized by means of an electro-optic sampling technique. The photoresponse from 100-fs laser pulses (390-nm wavelength) was measured to be in the form of Gaussian-shaped pulses with the width as short as 0.8 ps. The physical origin of the photoresponse signal can be attributed to a nonequilibrium electron heating mechanism. The measured signal represents, in our opinion, the intrinsic photoresponse of YBCO.

Keywords

LaAlO3 YBCO Film Voltage Transient Photoresponse Signal Bolometric Response 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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    M. Lindgrenet al., Appl. Phys. Lett.65 (1994) 3398.CrossRefADSGoogle Scholar
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    G. Gol'tsmanet al., IEEE Trans. Appl. Supercond.5 (1995) 2591.CrossRefGoogle Scholar
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    S. Alexandrouet al., IEEE J. Quantum Electron.QE-28 (1992) 2325.CrossRefADSGoogle Scholar

Copyright information

© Institute of Physics, Acad. Sci. CR 1996

Authors and Affiliations

  • Mikael Lindgren
    • 1
  • Marc Currie
    • 1
  • Carlo Williams
    • 1
  • Steven H. Moffat
    • 2
  • Robert A. Hughes
    • 2
  • Frank A. Hegmann
    • 3
  • John S. Preston
    • 2
  • Thomas Y. Hsiang
    • 1
  • Roman Sobolewski
    • 1
  1. 1.Department of Electrical Engineering and Laboratory for Laser EnergeticsUniversity of RochesterRochesterUSA
  2. 2.Brockhouse Institute for Materials ResearchMcMaster UniversityHamiltonCanada
  3. 3.Quantum InstituteUniversity of CaliforniaSanta BarbaraUSA

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