Femtosecond optical response of Y-Ba-Cu-O films and their applications in optoelectronics

Roman Sobolewski; Lei Shi; Ting Gong; W. Xiong; X. Weng; Y. Kostoulas; Philippe M. Fauchet

doi:10.1117/12.176136

20 May 1994 Femtosecond optical response of Y-Ba-Cu-O films and their applications in optoelectronics

Roman Sobolewski, Lei Shi, Ting Gong, W. Xiong, X. Weng, Y. Kostoulas, Philippe M. Fauchet

Proceedings Volume 2159, High-Temperature Superconducting Detectors: Bolometric and Nonbolometric; (1994) https://doi.org/10.1117/12.176136
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

We report systematic studies of the femtosecond transient reflectivity in Y-Ba-Cu-O (YBCO) thin films at temperatures ranging from 12 to 300 K. By using a 2-eV-pump/white-light-probe technique, we have very accurately measured the ultrafast optical response of YBCO as a function of the optical frequency, film oxygen content, and excitation intensity. Our results shed new light on the thermomodulation model, routinely used to interpret time-domain reflectivity data in high-temperature superconductors. We also review the current state of the art in the ultrafast optoelectronic response of YBCO.

Citation Download Citation

Roman Sobolewski, Lei Shi, Ting Gong, W. Xiong, X. Weng, Y. Kostoulas, and Philippe M. Fauchet "Femtosecond optical response of Y-Ba-Cu-O films and their applications in optoelectronics", Proc. SPIE 2159, High-Temperature Superconducting Detectors: Bolometric and Nonbolometric, (20 May 1994); https://doi.org/10.1117/12.176136

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