High-Frequency Characteristics of Quantum Well Infrared Photodetectors with Blocking Barrier
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概要
- 論文の詳細を見る
We have developed an analytical model for quantum well infrared photodetectors (QWIPs) with a superlattice serving as the absorption region and a blocking barrier. The explicit analytical expression for the frequency-dependent responsivity is derived as a function of the QWIP structural parameters. Using this expression we calculate the 3 dB cut-off frequency and bandwidth-response efficiency. The bandwidth of QWIPs with a moderate number of QWs can exceed 100 GHz exhibiting fairly large responsivity. We show that a fast tunneling filling of the absorption region by the electrons injected from the emitter contact results in a significant modification of the high-frequency properties of the QWIP under consideration compared to the standard QWIPs, in particular, in the elimination of the low-frequency peak of the responsivity.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2001-05-15
著者
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Ryzhii Victor
Computational Nanoelectronics Laboratory University Of Aizu
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Khmyrova Irina
Computational Nanoelectronics Laboratory University Of Aizu
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GUNAPALA Sarath
Jet Propulsion Laboratory, California Institute of Technology
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Bandara Sumith
Jet Propulsion Laboratory California Institute Of Technology
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Bandara Sumith
Jet Propulsion Laboratory, California Institute of Technology, Oak Grove Drive, 4800, Pasadena, CA 91109, USA
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Ishibashi Tadao
NTT Photonic Laboratories, NTT Corpration
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Ryzhii Victor
Computer Solid State Physics Laboratory, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
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Khmyrova Irina
Computer Solid State Physics Laboratory, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
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Gunapala Sarath
Jet Propulsion Laboratory, California Institute of Technology, Oak Grove Drive, 4800, Pasadena, CA 91109, USA
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Ishibashi Tadao
NTT Photonics Laboratories, Morinosato-Wakamiya 3-1, Atsugi 243-0198, Japan
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Ryzhii Victor
Computational Nano-Electronics Laboratory, University of Aizu, Aizuwakamatsu, Fukushima 965-8580, Japan
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