Strongly polarized quantum well infrared photodetector with metallic cavity for narrowband wavelength selective detection
| Autor: | Xiaohao Zhou, Yongfeng Mei, Xiaofei Nie, Honglou Zhen, Wei Lu, Gaoshan Huang, Yin Yizhe, Shilong Li, Pingping Chen |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Extinction ratio Infrared business.industry Physics::Optics Photodetector 02 engineering and technology 021001 nanoscience & nanotechnology Polarization (waves) 01 natural sciences Wavelength Narrowband 0103 physical sciences Optoelectronics 0210 nano-technology Quantum well infrared photodetector business Quantum well |
| Zdroj: | Applied Physics Letters. 116:161107 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0002012 |
| Popis: | A quantum well-integrated metallic microcavity infrared photodetector is designed and fabricated to achieve highly polarized narrowband wavelength selective detection. Linear grooves are etched on top of the mesa and then the whole device is completely coated with Ti/Au to form an open metallic microcavity, and the resonant mode of the metallic cavity can be detected by the embedded quantum well active layer. The obtained devices show very narrow wavelength selective detection ability as well as strong polarization-dependent characteristics. High performances such as a quality factor of 60 and a polarization extinction ratio of 146 are noticed. Our work provides a promising basis for developing highly integrated infrared cameras with a remarkable performance. |
| Databáze: | OpenAIRE |
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