论文标题
时间分辨的温度映射利用相变设备的强热效应
Time-resolved temperature mapping leveraging the strong thermo-optic effect in phase-change devices
论文作者
论文摘要
对于新兴应用，例如可调式跨面，可重新配置的光子电路和非von neumann计算，光相变材料非常有前途。但是，这些材料通常需要高熔融温度和快速淬火速率，以在其结晶和无定形相之间切换，这是大规模整合的重大挑战。在这里，我们提出了一种实验技术，该技术利用GST中的热效应效应，以实现两种常见的电热微热器设计，以实现空间和时间热测量。我们的方法在实验结果和数值模拟之间显示出极好的一致性，并提供了一种非侵入性方法，用于快速表征电气可编程的相位变换设备。
Optical phase-change materials are highly promising for emerging applications such as tunable metasurfaces, reconfigurable photonic circuits, and non-von Neumann computing. However, these materials typically require both high melting temperatures and fast quenching rates to reversibly switch between their crystalline and amorphous phases, a significant challenge for large-scale integration. Here, we present an experimental technique which leverages the thermo-optic effect in GST to enable both spatial and temporal thermal measurements of two common electro-thermal microheater designs currently used by the phase-change community. Our approach shows excellent agreement between experimental results and numerical simulations and provides a non-invasive method for rapid characterization of electrically programmable phase-change devices.
