固有ジョセフソン接合を用いたテラヘルツ波発振素子のキャビティモードの計算

• 立木 隆

  防衛大学校　電気電子工学科

• 内田 貴司

  防衛大学校　電気電子工学科

書誌事項

タイトル別名

• Calculation of Cavity Modes in Terahertz-wave Oscillators using Intrinsic Josephson Junctions
• コユウ ジョセフソン セツゴウ オ モチイタ テラヘルツハ ハッシン ソシ ノ キャビティモード ノ ケイサン

抄録

To evaluate cavity resonance modes in terahertz-wave oscillators using intrinsic Josephson junction stacks in high-temperature superconductors, an analytical solution of the coupled sine-Gordon equation was obtained by a continuous approximation. For a rectangular stack with a realistic scale, 80μm wide, 300μ m long and 1.1μm (∼700 junctions in the stack) in height, I-V characteristics and field distributions were calculated from the solution. Peak structures were appeared in the I-V curves and corresponded to cavity resonance modes, which were similar to those in a rectangular waveguide cavity. The maximum peak height was obtained at a bias voltage where the TE^y₁₁₁ mode at 0.51 terahertz was excited by the ac Josephson effect. The peak height decreased with increasing a radiation conductance that was introduced for including a radiation loss in the calculation. For design of antenna-coupled oscillators, a junction impedance was also evaluated. These results are useful for future improvement of the oscillators using intrinsic junctions.

収録刊行物

• 電気学会論文誌．　Ａ

  電気学会論文誌．　Ａ 132 (9), 747-752, 2012

  一般社団法人 電気学会

キーワード

• テラヘルツ波
• 発振素子
• 高温超伝導体
• ジョセフソン接合
• サイン・ゴードン方程式

詳細情報

• CRID: 1390282679575392384
• NII論文ID: 10031019032
• NII書誌ID: AN10136312
• DOI: 10.1541/ieejfms.132.747
• ISSN: 13475533
• ISSN: 03854205
• NDL書誌ID: 023974465
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023974465
• Web Site: https://www.jstage.jst.go.jp/article/ieejfms/132/9/132_747/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
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• 抄録ライセンスフラグ: 使用不可