Share Email Print

Proceedings Paper

Noise spectrum measurements of a midwave, interband cascade infrared photodetector with 33 nm wide electron barrier
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Interband cascade infrared photodetectors (ICIPs) potentially offer mid-wave infrared detection at very high operating temperatures due to their nearly ideal photovoltaic operation. An ICIP typically makes use of several cascade stages grown in series, each of which consists of an active absorption region with a mid-wave cutoff wavelength, an intra-band relaxation region for electron transport and an inter-band tunneling region to enable electron transport to the next stage. The latter two also effectively act as a hole-barrier (hB) and an electron-barrier (eB), respectively, forming a preferential path for each carrier. Here, an ICIP with a relatively large eB was investigated. One of the key parameters to measure for detector performance is the noise spectrum, particularly to observe the behavior at low frequencies where the noise is often much larger than estimates based on the ideal shot noise expression would predict. This paper presents the results of noise spectrum measurements of differently sized ICIP devices, taken using an external trans-impedance amplifier with a cooled, internal impedance converter and a cooled feedback resistor. Measurements were taken at different operating temperatures and voltage biases in order to determine the noise-dependence on each.

Paper Details

Date Published: 24 September 2013
PDF: 10 pages
Proc. SPIE 8876, Nanophotonics and Macrophotonics for Space Environments VII, 88760B (24 September 2013); doi: 10.1117/12.2026817
Show Author Affiliations
Laura A. Treider, Air Force Research Lab. (United States)
Vincent M. Cowan, Air Force Research Lab. (United States)
Christian P. Morath, Air Force Research Lab. (United States)
Zhaobing Tian, The Univ. of New Mexico (United States)
Sanjay Krishna, The Univ. of New Mexico (United States)

Published in SPIE Proceedings Vol. 8876:
Nanophotonics and Macrophotonics for Space Environments VII
Edward W. Taylor; David A. Cardimona, Editor(s)

© SPIE. Terms of Use
Back to Top