Emission Properties of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>-Film Photoswitches as Terahertz Radiation Sources
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- Tani Masahiko
- Kansai Advanced Research Center, Communications Research Laboratory, MPT, 588–2 Iwaoka, Nishi–ku, Kobe 651–24, Japan
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- Tonouchi Masayoshi
- Kansai Advanced Research Center, Communications Research Laboratory, MPT, 588–2 Iwaoka, Nishi–ku, Kobe 651–24, Japan
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- Hangyo Masanori
- Research Center for Superconducting Materials and Electronics, Osaka University, Suita, Osaka 565, Japan
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- Wang Zhen
- Kansai Advanced Research Center, Communications Research Laboratory, MPT, 588–2 Iwaoka, Nishi–ku, Kobe 651–24, Japan
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- Onodera Noriaki
- Kansai Advanced Research Center, Communications Research Laboratory, MPT, 588–2 Iwaoka, Nishi–ku, Kobe 651–24, Japan
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- Sakai Kiyomi
- Kansai Advanced Research Center, Communications Research Laboratory, MPT, 588–2 Iwaoka, Nishi–ku, Kobe 651–24, Japan
書誌事項
- タイトル別名
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- Emission Properties of YBa2Cu3O7-.DELTA. Film Photoswitches as Terahertz Radiation Sources.
抄録
Terahertz (THz) radiation is generated from biased YBa2Cu3O7-δ (YBCO)-film photoswitches by exciting them with femtosecond (fsec) laser pulses. The pump power, bias current and temperature dependence of the radiation amplitude is measured in order to characterize the emission properties of the high-critical-temperature (high-T C) superconducting photoswitches. The radiation amplitude increases superlinearly with increasing pump power in the moderate pump power range and saturates at high pump power. The bias current dependence of the radiation amplitude shows superlinear increase for high bias current. The temperature dependence of the radiation amplitude increases with increasing temperature except near the critical temperature. The features observed in the measurements are explained by the thermal and transient changes of the complex refractive index, which affects the output coupling efficiency of the THz radiation from the high-T C superconducting film to the free space.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 36 (3B), 1984-1989, 1997
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390282681224720256
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- NII論文ID
- 210000040911
- 130004523575
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- ISSN
- 13474065
- 00214922
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可