Room Temperature Heterodyne Detection up to 70GHz with Antenna-Coupled Quantum-Well Photodetectors Operating at 10μm
| Autor: | Jun-Peng Cao, Quyang Lin, J-F. Lampin, Emilien Peytavit, M. Hakl, S. Barbieri, Wenjian Wan, Hui Li, Raffaele Colombelli, S. Pirotta |
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| Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Photonique THz - IEMN (PHOTONIQUE THz - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Photonique THz - IEMN (PHOTONIQ THz - IEMN) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Frequency response business.industry Coplanar waveguide Photodetector 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Cutoff frequency 010309 optics [SPI]Engineering Sciences [physics] Parasitic capacitance 0103 physical sciences Optoelectronics Equivalent circuit Heterodyne detection 0210 nano-technology business ComputingMilieux_MISCELLANEOUS |
| Zdroj: | 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Nov 2020, Buffalo, NY, USA, United States. pp.1-2, ⟨10.1109/IRMMW-THz46771.2020.9370361⟩ |
| Popis: | III-V semiconductor mid-infrared photodetectors based on intersubband transitions hold a great potential for ultra-high-speed operation up to several hundreds of GHz. In this work we exploit a ~350nm-thick GaAs/Al 0.2 Ga 0.8 As multi-quantum-well heterostructure to demonstrate heterodyne detection at $\lambda\sim 10\mu \mathrm{m}$ with a nearly flat frequency response up to 70GHz at room temperature, solely limited by the measurement system bandwidth. To the best of our knowledge this is the broadest RF-bandwidth reported to date for a quantum-well mid-infrared photodetector. Responsivities of 0.15A/W and 1.5A/W are obtained at 300K and 77K respectively. To allow ultrafast operation and illumination at normal incidence, the detector consists of a $50\Omega$ coplanar waveguide, monolithically integrated with a 2D-array of patch antennas, electrically interconnected by suspended wires. With this device architecture we obtain a parasitic capacitance of $\sim 30\text{fF}$ , corresponding to the static capacitance of the antennas, yielding a RC-limited 3dB cutoff frequency >150GHz at 300K, extracted with a small-signal equivalent circuit model. Using this model, we quantitively reproduce the detector frequency response and find intrinsic roll-off time constants as low as 1ps at room temperature. |
| Databáze: | OpenAIRE |
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