Optical control of millimeter wave high T sub c superconducting quasi-optical bandpass filters

Journal Article · Mon Apr 08 04:00:00 EDT 1991 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.105177· OSTI ID:5617830

Zhang, D; Plant, D V; Fetterman, H R ^[1]; Chou, K; Prakash, S; Deshpandey, C V; Bunshah, R F ^[2]

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1. Department of Electrical Engineering, University of California, Los Angeles, Los Angeles, California 90024 (US)
2. Department of Materials Science Engineering, University of California, Los Angeles, Los Angeles, California 90024 (US)

The optical response of YBa{sub 2}Cu{sub 3}O{sub 7} high {ital T}{sub {ital c}} superconducting quasi-optical millimeter wave bandpass filters operating at {ital W} band (75--110 GHz) has been investigated under various conditions of illumination. Radiation from a cw Ar{sup +} laser (514.5 nm) and a frequency-doubled Nd:YAG laser (532.8 nm, 120 ps) was used to induce a shift in the resonant frequency of the filter. A shifted Lorentzian line shape function model was used to estimate the magnitude of the light-induced changes. Shifts of the filter's resonance frequency on the order of 0. 1 MHz were induced by the laser effects on the superconductor pair population.

• OSTI ID: 5617830
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:14; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRONIC CIRCUITS
FILMS
FILTERS
HIGH-TC SUPERCONDUCTORS
OPERATION
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
USES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES