Tunable high-order harmonic generation in GeSbTe nano-films

被引：4
作者：
Korolev, Viacheslav [1 ]
Sinelnik, Artem D. [1 ]
Rybin, Mikhail V. [2 ,3 ]
Lazarenko, Petr [4 ]
Kushchenko, Olga M. [2 ]
Glukhenkaya, Victoria [4 ]
Kozyukhin, Sergey [5 ]
Zuerch, Michael [1 ,6 ]
Spielmann, Christian [1 ]
Pertsch, Thomas [1 ,7 ,8 ]
Staude, Isabelle [1 ]
Kartashov, Daniil [1 ]
机构：
[1] Friedrich Schiller Univ Jena, Jena, Germany
[2] ITMO Univ, St Petersburg, Russia
[3] Ioffe Inst, St Petersburg, Russia
[4] Natl Res Univ Elect Technol, Moscow, Russia
[5] NS Kurnakov Inst Gen & Inorgan Chem, Moscow, Russia
[6] Univ Calif Berkeley, Berkeley, CA USA
[7] Fraunhofer Inst Appl Opt & Precis Engn IOF, Jena, Germany
[8] Max Planck Sch Photon, Jena, Germany
来源：
NANOPHOTONICS | 2024年 / 13卷 / 18期
关键词：
high harmonic generation; GST; active nonlinear photonics; phase change material; CONVERSION; ELECTRONS;
D O I：
10.1515/nanoph-2023-0859
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High-order harmonic generation (HHG) in solids opens new frontiers in ultrafast spectroscopy of carrier and field dynamics in condensed matter, picometer resolution structural lattice characterization and designing compact platforms for attosecond pulse sources. Nanoscale structuring of solid surfaces provides a powerful tool for controlling the spatial characteristics and efficiency of the harmonic emission. Here we study HHG in a prototypical phase-change material Ge2Sb2Te5 (GST). In this material the crystal phase can be reversibly changed between a crystalline and amorphous phase by light or electric current mediated methods. We show that optical phase-switching is fully reversible and allows for dynamic control of harmonic emission. This introduces GST as new addition to materials that enable flexible metasurfaces and photonic structures that can be integrated in devices and allow for ultrafast optical control.
引用
收藏
页码：3411 / 3419
页数：9
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