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Wide Bandgap Phase Change Material Tuned Visible Photonics
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-12-13 , DOI: 10.1002/adfm.201806181 Weiling Dong 1 , Hailong Liu 1 , Jitendra K. Behera 1 , Li Lu 1 , Ray J. H. Ng 1 , Kandammathe Valiyaveedu Sreekanth 2 , Xilin Zhou 1 , Joel K. W. Yang 1, 3 , Robert E. Simpson 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-12-13 , DOI: 10.1002/adfm.201806181 Weiling Dong 1 , Hailong Liu 1 , Jitendra K. Behera 1 , Li Lu 1 , Ray J. H. Ng 1 , Kandammathe Valiyaveedu Sreekanth 2 , Xilin Zhou 1 , Joel K. W. Yang 1, 3 , Robert E. Simpson 1
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Light strongly interacts with structures that are of a similar scale to its wavelength, typically nanoscale features for light in the visible spectrum. However, the optical response of these nanostructures is usually fixed during the fabrication. Phase change materials offer a way to tune the properties of these structures in nanoseconds. Until now, phase change active photonics has used materials that strongly absorb visible light, which limits their application in the visible spectrum. In contrast, Sb2S3 is an underexplored phase change material with a bandgap that can be tuned in the visible spectrum from 2.0 to 1.7 eV. This tuneable bandgap is deliberately coupled to an optical resonator such that it responds dramatically in the visible spectrum to Sb2S3 reversible structural phase transitions. It is shown that this optical response can be triggered both optically and electrically. High‐speed reprogrammable Sb2S3 based photonic devices, such as those reported here, are likely to have wide applications in future intelligent photonic systems, holographic displays, and microspectrometers.
中文翻译：
宽带隙相变材料调谐可见光子学
光与与其波长相似的尺度（通常是可见光谱中的光的纳米尺度特征）强烈相互作用。然而，这些纳米结构的光学响应通常在制造期间是固定的。相变材料提供了一种在纳秒内调整这些结构的特性的方法。到目前为止，相变有源光子学已经使用了强烈吸收可见光的材料，这限制了它们在可见光谱中的应用。相反，Sb 2 S 3是一种未开发的相变材料，其带隙可以在2.0到1.7 eV的可见光谱范围内调节。该可调谐带隙有意耦合到光学谐振器，以使其在可见光谱中对Sb 2 S做出显着响应3个可逆的结构相变。结果表明，该光学响应既可以通过光学方式也可以通过电子方式触发。基于高速可重编程的Sb 2 S 3的光子器件（例如此处报告的器件）可能会在未来的智能光子系统，全息显示器和显微光谱仪中得到广泛的应用。
更新日期：2018-12-13
中文翻译：
宽带隙相变材料调谐可见光子学
光与与其波长相似的尺度（通常是可见光谱中的光的纳米尺度特征）强烈相互作用。然而，这些纳米结构的光学响应通常在制造期间是固定的。相变材料提供了一种在纳秒内调整这些结构的特性的方法。到目前为止，相变有源光子学已经使用了强烈吸收可见光的材料，这限制了它们在可见光谱中的应用。相反，Sb 2 S 3是一种未开发的相变材料，其带隙可以在2.0到1.7 eV的可见光谱范围内调节。该可调谐带隙有意耦合到光学谐振器，以使其在可见光谱中对Sb 2 S做出显着响应3个可逆的结构相变。结果表明，该光学响应既可以通过光学方式也可以通过电子方式触发。基于高速可重编程的Sb 2 S 3的光子器件（例如此处报告的器件）可能会在未来的智能光子系统，全息显示器和显微光谱仪中得到广泛的应用。
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