Responsivity Variation with Temperature of Uncooled Mid-infrared HgCdTe Photoconductive Detector
| Autor: | 张检民 Zhang Jianmin, 冯国斌 Feng Guobin, 杨鹏翎 Yang Pengling, 王群书 Wang Qunshu, 安毓英 An Yu-ying |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Physics::Instrumentation and Detectors business.industry Detector Irradiance Mid infrared Laser Atomic and Molecular Physics and Optics law.invention Wavelength Responsivity Photoconductive detector Optics law Optoelectronics Measurement uncertainty business Astrophysics::Galaxy Astrophysics |
| Zdroj: | ACTA PHOTONICA SINICA. 42:787-791 |
| ISSN: | 1004-4213 |
| Popis: | To measure the mid-infrared deuterium fluoride laser irradiance distribution,a laser beam profile diagnostic system based on uncooled mid-infrared HgCdTe photoconductive detector array is developed.Because the mid-infrared detector is very sensitive to work temperature,it is necessary to quantitatively analyze its temperature characteristics for evaluating the measuring uncertainty of the system and providing the criterion of selecting the satisfactory detector.The responsivity of HgCdTe photoconductive detector related with temperature and wavelength is analyzed.It is deduced that the responsivity can be expressed as a variable-separate function of temperature and wavelength under special conditions.The assumption is validated by the experiment,of which the responsivity of uncooled mid-infrared HgCdTe photoconductive detector in(-40～+30)℃is measured with 3.8μm and 1.31μm lasers.Based on the results,a simple and practical method to measure the temperature characteristic of the responsivity of uncooled MIR HgCdTe detector is presented. |
| Databáze: | OpenAIRE |
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