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Probing ultrafast proton induced dynamics in transparent dielectrics

M Taylor, M Coughlan, G Nersisyan, L Senje, D Jung, F Currell, D Riley, C L S Lewis, M Zepf, B Dromey2018年Plasma Physics and Controlled FusionIF 2.2出版社

A scheme has been developed permitting the spatial and temporal characterisation of ultrafast dynamics induced by laser driven proton bursts in transparent dielectrics. Advantage is taken of the high degree of synchronicity between the proton bursts generated during laser-foil target interactions and the probing laser to provide the basis for streaking of the dynamics. Relaxation times of electrons (<10−12 s) are measured following swift excitation across the optical band gap for various glass samples. A temporal resolution of <500 fs is achieved demonstrating that these ultrafast dynamics can be characterized on a single-shot basis.

日本語訳

スキームが開発され、透明誘電体中におけるレーザー駆動陽子バーストによって誘起される超高速ダイナミクスの空間的および時間的特性評価が可能となった。レーザーとターゲットの相互作用中に生成される陽子バーストとプローブレーザーとの間の高い同期性を利用して、ダイナミクスのストリーキングの基盤を提供する。様々なガラス試料において、光学バンドギャップを横切る迅速な励起に続く電子の緩和時間(<10⁻¹²秒)が測定された。単一ショットベースでの特性評価が可能であることを実証し、<500フェムト秒の時間分解能を達成した。

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