High-Speed Y–Ba–Cu–O Direct Detection System for Monitoring Picosecond THz Pulses

Author

Thoma, Petra ; Scheuring, Alexander ; Wunsch, S. ; Il´in, K. ; Semenov, Alexander ; Hubers, H. ; Judin, V. ; Muller, Anke-Susanne ; Smale, N. ; Adachi, Masakazu ; Tanaka, Shoji ; Kimura, Shunji ; Katoh, Masahiro ; Yamamoto, Naoji ; Hosaka, Masahito ; Rous

Author_Institution

Inst. of Microand Nanoelectronic Syst., Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany

Volume

3

Issue

1

fYear

2013

fDate

Jan. 2013

Firstpage

81

Lastpage

86

Abstract

A high-speed YBa₂Cu₃O_7-δ direct detection system was developed to monitor terahertz picosecond pulses in the time domain. High-T_C superconducting thin-film YBa₂Cu₃O_7-δ microbridges with critical temperatures of T_C = 85 K were embedded into a planar log-spiral antenna to couple the broadband terahertz radiation (0.1 -2 THz) of several picosecond pulsed sources. The YBa₂Cu₃O_7-δ detectors were installed in a liquid nitrogen cryostat equipped with 18 GHz effective bandwidth readout electronics. THz pulses generated at the electron storage rings ANKA and UVSOR-II have been resolved with a temporal resolution of 30 ps (full width at half maximum) limited by the readout electronics bandwidth. Beam dynamic effects of bursting coherent synchrotron radiation were successfully monitored.

Keywords

monitoring; planar antennas; spiral antennas; terahertz waves; UVSOR-II; beam dynamic effects; broadband terahertz radiation; bursting coherent synchrotron radiation; critical temperature; direct detection system; electron storage rings ANKA; frequency 18 GHz; high TC superconducting thin film; liquid nitrogen cryostat; microbridges; picosecond THz pulse monitoring; planar log spiral antenna; readout electronics bandwidth; temperature 85 K; terahertz picosecond pulse monitoring; time domain; Detectors; Educational institutions; Laser beams; Lenses; Synchrotron radiation; Yttrium barium copper oxide; Coherent synchrotron radiation; high-temperature superconductor ${hbox{YBa}}_{2}{hbox{Cu}}_{3}{hbox{O}}_{7-delta}$ ; picosecond THz pulses; thin-film THz detectors;

fLanguage

English

Journal_Title

Terahertz Science and Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-342X

Type

jour

DOI

10.1109/TTHZ.2012.2234209

Filename

6412772