A simple high-temperature superconducting thin-film optical bolometer

The authors have demonstrated the operation of a simple optical bolometer by irradiating a constriction in a Y1Ba2Cu3O7-δ thin film with chopped laser light at λ=633 nm. The change in film resistivity was measured by lock-in detection of the AC component in the current-biased mode. Operating optimally near 77 K, the bolometer shows detectivity of 5 mV W-1 and NEP of 10-6 W Hz-1/2. The authors discuss the possibility of methods to improve these figures by at least three orders of magnitude


Published in:
Superconductor Science & Technology, 2, 6, 314-316
Year:
1989
Laboratories:




 Record created 2007-03-26, last modified 2018-03-17


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