Computer-controlled photodetector characterization system (design and construction).
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Authors
Herdlick, Bryan E.
Subjects
Detector
Photodetector
QWIP
Responsitivity
Monochromator
Characterization
Characteristic response
Detectivity
LabVIEW
Virtual instrument
Optics
Photonics
Photodetector
QWIP
Responsitivity
Monochromator
Characterization
Characteristic response
Detectivity
LabVIEW
Virtual instrument
Optics
Photonics
Advisors
Karunasiri, Gamani
Davis, Scott
Date of Issue
2002-12
Date
December 2002
Publisher
Monterey, Calif. Naval Postgraduate School
Language
Abstract
This system was designed to evaluate the response characteristics of photodetectors operating at wavelengths in the 1 micron and 8-12 micron range. A Quartz-Tungsten-Halogen source was used for visible and near-IR energy, and a dedicated IR element provided gray-body radiation with a peak at 1150 Kelvin. A monochromator was employed in conjunction with a six-position filter wheel to provide precise control of energy incident on the photodetectors. Variations in the efficiency of components were compensated for through normalization based on the energy incident on the photodetectors. An intuitive, computer-based interface was developed to automate data collection, and provided numeric and graphic representations of data as it is being collected. At completion, data is exported to a spreadsheet file. A commercial silicon detector was successfully characterized, and accurate voltage response and responsivity curves were generated. A pyroelectric detector was used to verify proper operation of gratings and filters at infrared wavelengths. The system is suitable for its intended purpose, and will be capable of characterizing detectors designed to operate in the 3-5 micron range with the installation of appropriate filters and gratings.
Type
Thesis
Description
Series/Report No
Department
Physics
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xii, 71 p. : ill. (some col.)
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.