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室温波导集成的光电探测器使用博洛米特效应用于中红外光谱应用中红外光谱

Joonsup Shim¹, Jinha Lim¹, Inki Kim¹

¹School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-Ro, Yuseong-Gu, Daejeon, 34141, Republic of Korea.

Light, science & applications

|March 19, 2025

概括

本研究介绍了一种未冷却的波导集成光探测器,使用用于宽带中红外 (MIR) 光探测. 该设备可实现高效的室温分子光谱和芯片上的实验室应用.

科学领域:

光子学和光学工程光子学和光学工程
材料科学材料科学材料科学
频谱学是一种光谱学.

背景情况:

波导集成的中红外 (MIR) 光探测器对于分子光谱学至关重要,但在宽带响应,无冷却操作和CMOS兼容性方面面临挑战.
现有的策略难以满足对大规模,经济高效的MIR光子集成电路 (PIC) 的需求.

研究的目的:

为MIR应用开发一个未冷却的波导集成光探测器.
通过利用 (Ge) 中的波力度效应和自由载体吸收 (FCA) 来克服当前MIR光探测器的局限性.
为了展示一个CMOS兼容的解决方案宽带MIR光检测.

主要方法:

集成一个在绝缘体 (Ge-OI) PIC架构.
利用博洛米特效应与FCA相结合,用于光吸收.
使用集成设备,展示无标签的二氧化碳 (CO2) 传感.

主要成果:

在4030-4360 nm的宽带响应率达到28.35%/mW.
在4180 nm获得4.03 × 10−7 W/Hz0.5的噪声等效功率.
成功证明了无标签的CO2气体在芯片上的传感.

结论:

开发的未冷却的波导集成光探测器提供了一个务实的解决方案,用于使用Ge. Ge. 进行MIR全频谱覆盖.
这种方法促进了完全集成的,波长灵活的lab-on-a-chip系统.
为CMOS-foundry兼容的MIR PIC提供蓝图,推进分子光谱学和传感.

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