High-frequency operation of a mid-infrared interband cascade system at room temperature

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1063/1.4950700
Author	Search for: Lotfi, Hossein; Search for: Li, Lu; Search for: Lei, Lin; Search for: Ye, Hao; Search for: Shazzad Rassel, S. M.; Search for: Jiang, Yuchao; Search for: Yang, Rui Q.; Search for: Mishima, Tetsuya D.; Search for: Santos, Michael B.; Search for: Gupta, James A.¹; Search for: Johnson, Matthew B.
Name affiliation	National Research Council of Canada. Information and Communication Technologies
Format	Text, Article
Journal title	Applied Physics Letters
ISSN	0003-6951 1077-3118
Volume	108
Issue	20
Article number	201101
Pages	1–5
Subject	Capacitance; High temperature instruments; Current density; Diffusion; Low temperature detectors
Abstract	The high-frequency operation of a mid-infrared interband cascade system that consists of a type-I interband cascade laser and an uncooled interband cascade infrared photodetector (ICIP) is demonstrated at room temperature. The 3-dB bandwidth of this system under direct frequency modulation was ∼850 MHz. A circuit model was developed to analyze the high-frequency characteristics. The extracted 3-dB bandwidth for an uncooled ICIP was ∼1.3 GHz, signifying the great potential of interband cascade structures for high-speed applications. The normalized Johnson-noise-limited detectivity of these ICIPs exceeded 10⁹ cm Hz½/W at 300 K. These results validate the advantage of ICIPs to achieve both high speed and high sensitivity at high temperatures.
Publication date	2016-05-16
Publisher	American Institute of Physics
Language	English
Peer reviewed	Yes
NPARC number	23000371
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Record identifier	baa0f795-d7d1-4c11-a225-5d6c46dd2cf9
Record created	2016-07-11
Record modified	2020-03-16

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Date modified:: 2020-06-01