連続体内の光子結合状態からのレーザー作用
Ashok Kodigala1, Thomas Lepetit1, Qing Gu1
1Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, California 92093-0407, USA.
Nature
|January 13, 2017
まとめ
連続体の束縛状態 (BIC) は,衰退しない共鳴である. 研究者は,光学的にポンプされたBIC腔から室温レーザー作用を達成し,初めてBICレーザーを実証しました.
科学分野:
- 波の物理
- 量子力学について
- ナノフォトニクス
背景:
- BICは1929年に理論的に予測された.
- 当初は数学的な好奇心として考えられ,BICは後に半導体超の物理現象と関連付けられました.
- BICは,音学,マイクロ波,ナノフォトニクスで観察される一般的な波現象ですが,レーザーでの実験的実現は難しかった.
研究 の 目的:
- 連続体 (BIC) の空間に結合状態からレーザー作用を実験的に実証する.
- 波長スケーリングと強度を含むBICレーザーの性質を調査する.
- 光と物質の相互作用とベクトルビームの源としてのBICレーザーの可能性を調査する.
主な方法:
- 円筒形ナノレゾナー配列を用いたBIC腔の製造.
- 室温でBICの穴を光学的にポンプする.
- レージング波長とナノレゾナータ半径への依存性の実験測定.
主要な成果:
- 光学的にポンプされたBIC腔から室温レーザー作用を達成した.
- 理論的な予測に合致するナノレゾナータ半径で波長をスケールすることが示されました.
- 縮小されたBIC腔 (8x8のナノレゾナーと同じくらい小さい) でレージングが持続することを示した.
結論:
- BICレーザーの実験的実現は,光と物質の相互作用を研究するための新しい可能性を開きます.
- BICレーザーはトポロジカルチャージと密接に関連しており,自然のベクトルビーム源として機能します.
- これらの発見は 光学的な罠や 生物学的センサーや 量子情報への応用が可能です
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