期刊
ACS NANO
卷 14, 期 12, 页码 16634-16642出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c00724
关键词
on-chip polarimeter; Stokes parameters; metasurface; near-infrared; monolithic; graphene-silicon photodetector
类别
资金
- National Key R&D Program of China [2018YFA0307300, 2016YFA0200200]
- National Natural Science Foundation of China [61775092, 61674127, 61874094]
- Zhejiang Natural Science Foundation [LZ17F040001]
- Collaborative Innovation Center of Advanced Microstructures
- Fundamental Research Funds for ZheJiang Provincial Colleges Universities
- Fundamental Research Funds for the Central Universities [14380140, 511308*17221032001]
- Penn State University John L. and Genevieve H. McCain endowed chair professorship
- ZJU Micro-Nano Fabrication Center
- NJU Micro-Fabrication Center
- International Joint Innovation Center, Zhejiang University, Haining campus
- Texas AM University
The ability to detect the full-Stokes polarization of light is vital for a variety of applications that often require complex and bulky optical systems. Here, we report an on-chip polarimeter comprising four metasurface-integrated graphene-silicon photodetectors. The geometric chirality and anisotropy of the metasurfaces result in circular and linear polarization-resolved photoresponses, from which the full-Stokes parameters, including the intensity, orientation, and ellipticity of arbitrarily polarized incident infrared light (1550 nm), can be obtained. The design presents an ultracompact architecture while excluding the standard bulky optical components and structural redundancy. Computational extraction of full-Stokes parameters from mutual information among four detectors eliminates the need for a large absorption contrast between different polarization states. Our monolithic plasmonic metasurface integrated polarimeter is ideal for a variety of polarization-based applications including biological sensing, quantum information processing, and polarization photography.
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