Wavelength dependent photoresponse in YBCO thin-film systems

We present results on the photoresponse of YBCO narrow-line structures with deliberately broadened resistive transitions. We have explored the photoresponse of these systems as a function of temperature, bias current and power at wavelengths of 0.670, 0.850 and 10.6 /spl mu/m and at frequencies from...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1999-06, Vol.9 (2), p.3182-3185
Main Authors: Ruggiero, S.T., Mischke, M.P., Tanner, C.E., Wilson, A.J., Vale, L.R., Rudman, D.A.
Format: Article
Language:English
Subjects:
Bias
Bolometer
infrared, submillimeter wave, microwave and radiowave receivers and detectors
Bolometers
Choppers
COPPER OXIDE
Current measurement
ELECTRICAL CONDUCTIVITY
Electrical resistance measurement
Exact sciences and technology
Frequency
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Light sources
Optical fiber cables
Physics
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Temperature
THIN FILMS
Transistors
WAVELENGTH
Wavelengths
Wheels
YBCO superconductors
Yttrium barium copper oxide
YTTRIUM OXIDE
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Summary:We present results on the photoresponse of YBCO narrow-line structures with deliberately broadened resistive transitions. We have explored the photoresponse of these systems as a function of temperature, bias current and power at wavelengths of 0.670, 0.850 and 10.6 /spl mu/m and at frequencies from 3 to 10/sup 5/ Hz at 0.670 /spl mu/m. The response was bolometric in nature in the vicinity of T/sub c/ (R=30 V/W). However, the response below T/sub c/ shows significant enhancement at 0.670 /spl mu/m. The wavelength regime of the enhancement suggests the participation of transient photodoping of the material or related phenomena.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.783705