基于二极管激光器的光电探测系统响应时间的测量
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TM923

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重庆工商大学高层次人才科研启动项目(1956045)


Response time measurement of photoelectric detection system based on diode laser
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    摘要:

    光电探测系统在光度测量及光谱检测领域应用广泛,是检测的核心部件.光电探测系统的响应时间反映了该系统能够探测的极限,对其进行准确的测量在实际应用中十分必要.本文展示了一种能够准确测量光电探测系统响应时间的方法,以常用的可调谐二极管激光器(波长为763 nm)为光源,采用方波信号调谐光源输出,测量了系统的响应时间.结果显示,示波器内电阻对系统的响应时间存在影响,当电阻为50 Ω时,探测系统的响应时间为4.5 μs.降低电阻值,可以进一步缩短响应时间.

    Abstract:

    Photoelectric detection system is the core component of a detector,and is widely used in photo-metric measurement and spectroscopy monitoring.Response time of a photoelectric detection system reflects the fastest response limit of the system in detection.Thus,an accurate measurement of the response time is very important for application.This work shows a method for accurate response time measurement of a photoelectric detection system.Here,a tunable diode laser with a wavelength of 763 nm,usually used in spectroscopy,is used as the light source and is tuned with a square wave.The response time is measured.The results indicates that the resistance of the oscilloscope can influence the response time of the system.The response time of the photoelectric detection system is measured as 4.5 μs when the resistance value is 50 Ω.The response time can be shortened if the resistance value reduces.This work provides a response time measurement method of a photoelectric detection system,which is a basis for the choice of detection system in application.

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周雪,周娣,张会焱.基于二极管激光器的光电探测系统响应时间的测量[J].南京信息工程大学学报(自然科学版),2020,12(3):311-315
ZHOU Xue, ZHOU Di, ZHANG Huiyan. Response time measurement of photoelectric detection system based on diode laser[J]. Journal of Nanjing University of Information Science & Technology, 2020,12(3):311-315

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  • 收稿日期:2020-01-17
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  • 在线发布日期: 2020-07-07
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