Modeling and analysis of high-temperature superconductor terahertz photomixers

Author

Saeedkia, Daryoosh ; Mansour, Raafat R. ; Safavi-Naeini, Safieddin

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of Waterloo, Ont., Canada

Volume

15

Issue

3

fYear

2005

Firstpage

3847

Lastpage

3855

Abstract

Photomixing phenomenon in superconductors is studied. For a photo-excited superconductor film the fundamental equations for the carriers motion inside the superconductor material have been used in connection with the two-temperature model to find an analytic expression for the generated terahertz (THz) photocurrent inside the film. The dependency of the resulting photocurrent on the material and laser parameters, temperature, and photomixer configuration for a photomixer made of YBa₂Cu₃O_7-δ high-temperature superconductor is studied.

Keywords

barium compounds; high-temperature superconductors; photoconductivity; superconducting devices; superconducting thin films; yttrium compounds; YBa₂Cu₃O_7-δ; carriers motion; continuous-wave terahertz sources; high-temperature superconductor; laser parameter; photoexcited superconductor film; photomixing phenomenon; superconductor material; terahertz optoelectronics; terahertz photocurrent; terahertz photomixer; Frequency; High temperature superconductors; Laser beams; Laser modes; Laser theory; Optical materials; Photoconductivity; Superconducting films; Superconducting materials; Superconducting transmission lines; Continuous-wave (CW) terahertz sources; high-temperature superconductors; photomixers; terahertz optoelectronics; terahertz photocurrent;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.850555

Filename

1504857