Misc.

Mar, 2007

Study on sub-THz signal input for superconducting electronic devices

IEICE Transactions on Electronics
  • Iwao Kawayama
  • ,
  • Yasushi Doda
  • ,
  • Ryuhei Kinjo
  • ,
  • Toshihiko Kiwa
  • ,
  • Hironaru Murakami
  • ,
  • Masayoshi Tonouchi

Volume
E90-C
Number
3
First page
588
Last page
594
Language
English
Publishing type
DOI
10.1093/ietele/e90-c.3.588
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG

Development of ultrafast optical interfaces that can operate in sub-terahertz region is important to apply superconducting electronic devices to the high-end systems. We have performed several fundamental researches to realize the ultrafast optical input interface for superconducting electronic devices. Firstly, we observed optical response of amorphous Ge thin films, and the results indicated that an amorphous Ge photoconductive switch could stably operate in a terahertz frequency range as an optical-to-electrical signal converter in the low-temperature region below Tc of YBCO. Next, we have fabricated optical-to-electrical signal conversion system with photomixing technique, and we have demonstrated the generation and the detection of high frequency signals over 50 GHz. Finally, we have observed optical responses of a Josephson vortex flow transistor under irradiation of femtosecond laser pulses, and the results suggeste that the device has high potential as an optical interface. Copyright © 2007 The Institute of Electronics, Information and Communication Engineers.

Link information
DOI
https://doi.org/10.1093/ietele/e90-c.3.588
Web of Science
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Scopus
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Scopus Citedby
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ID information
  • DOI : 10.1093/ietele/e90-c.3.588
  • ISSN : 0916-8524
  • eISSN : 1745-1353
  • SCOPUS ID : 33947160117
  • Web of Science ID : WOS:000245194400007

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