Optical switching dynamics of sub-micrometer Sb2Se3 thin films for active photonics

Optical switching dynamics of sub-micrometer Sb2Se3 thin films for active photonics
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用于主动光子学的亚微米 Sb2Se3 薄膜的光学开关动力学

DOI:
10.1117/12.2682125
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发表时间:
2023
期刊:
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影响因子:
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通讯作者:
Lawson D
Lawson D
中科院分区:
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文献类型:
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作者:
Lawson D

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光学相变材料(O-PCM)组件正迅速成为光子集成电路、超颖表面和自由空间光子学的非易失性有源控制的主流实现方式。在这项工作中,我们探讨了实际的限制,可逆的光开关的低损耗锑基O-PCM的Sb 2Se 3使用一系列的静态测试仪和时间分辨技术,并证明了在Sb 2Se 3超过10^6可逆转换的可循环性。我们表明,在488 nm的光泵浦的结果在一个定义良好的深度限制在晶体的玻璃化转变,这是由于纳秒热激发的限制在顶部区域的Sb 2Se 3膜。
Optical Phase change material (O-PCM) components are rapidly becoming a mainstream implementation for non-volatile active control of photonic integrated circuits, metasurfaces and free-space photonics. In this work we explore the practical limitations of the reversible optical switching of the low-loss antimony-based O-PCM Sb2Se3using a range of static tester and time-resolved techniques and demonstrates cyclability in Sb2Se3beyond 10^6 reversible transitions. We demonstrate that optical pumping at 488nm results in a well-defined depth limit in the crystal to glass transition, which arises from the confinement of the nanosecond thermal excitation in the top region of the Sb2Se3film.