极化(电化学)
旋光法
光电子学
光学
斯托克斯参量
消光比
物理
炸薯条
等离子体子
波长
探测器
材料科学
计算机科学
散射
电信
化学
物理化学
作者
Xu Dai,Yu Yu,Ye Tao,Jie Deng,Yonghao Bu,Mengdie Shi,Ruowen Wang,Jing Zhou,Liaoxin Sun,Xiaohong Chen,Xuechu Shen
出处
期刊:Nano Letters
[American Chemical Society]
日期:2024-01-11
卷期号:24 (3): 983-992
被引量:11
标识
DOI:10.1021/acs.nanolett.3c04454
摘要
On-chip polarization detectors have attracted extensive research interest due to their filterless and ultracompact architecture. However, their polarization-dependent photoresponses cannot be dynamically adjusted, hindering the development toward intelligence. Here, we propose dynamically reconfigurable polarimetry based on in-sensor differentiation of two self-powered photoresponses with orthogonal polarization dependences and tunable responsivities. Such a device can be electrostatically configured in an ultrahigh polarization extinction ratio (PER) mode, where the PER tends to infinity, a Stokes parameter direct sensing mode, where the photoresponse is proportional to S1 or S2 with high accuracy (RMSES1 = 1.5%, RMSES2 = 2.0%), or a background suppressing mode, where the target-background polarization contrast is singularly enhanced. Moreover, the device achieves a polarization angle sensitivity of 0.51 mA·W–1·degree–1 and a specific polarization angle detectivity of 2.8 × 105 cm·Hz1/2·W·degree–1. This scheme is demonstrated throughout the near-to-long-wavelength infrared range, and it will bring a leap for next-generation on-chip polarimeters.
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