概括
一种新型的无形-锡 (a-GeSn) 波导波计与1D元表面吸收器增强了中红外光检测. 这种室温装置在平台上显著提高了响应能力和高频性能.
科学领域:
- 光子学和光电学和光电子学.
- 材料科学 材料科学 材料科学
- 红外技术 红外技术
背景情况:
- 中红外 (MIR) 光探测对于各种应用至关重要,包括热成像和光谱学.
- 传统的光电探测器通常需要冷冷却,这限制了它们的实际使用.
- -锡 (GeSn) 合金为MIR应用提供可调节的带隙,但将其集成到高效的光探测器中仍然是一个挑战.
研究的目的:
- 提出和研究一个使用无形-锡 (a-GeSn) 活性物质的室温波导波计.
- 通过结合一个一维的 (1D) 超表面吸收器来探索波导玻洛米特的性能提升.
- 为了评估在- (GOS) 光子平台上拟议的设备的响应和频率响应.
主要方法:
- 在在绝缘体 (SOI) 基板上制造一个无形-锡 (a-Ge0.83Sn0.17) 波导波计.
- 集成了一种1D超表面吸光器,旨在增强4.14.3μm波长范围内的光吸收.
- 设备的光学和电气性能的表征,包括响应能力和3dB的滚动频率.
主要成果:
- 1D超表面吸收器显著提高了光吸收,从而提高了a-GeSn波导球计的响应能力.
- 在4.1~4.3μm波长范围内,达到大约-3.17%/μW的峰值响应率.
- 该设备表现出高3dB的滚动频率超过10kHz,表明它适合高速检测.
结论:
- 拟议的a-GeSn波导博洛米特与1D元表面吸收器,代表了一个有前途的室温解决方案,用于中红外光检测.
- 超表面吸收器的集成提供了一个可行的策略,以提高基于波导的光学探测器的性能.
- 这种基于GOS平台的设备显示了小型和高效的MIR传感应用的潜力.
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