光学
探测器
光圈(计算机存储器)
连贯性(哲学赌博策略)
灵敏度(控制系统)
材料科学
光纤
角孔径
光学相干层析成像
数值孔径
物理
焦距
波长
量子力学
工程类
声学
电子工程
镜头(地质)
作者
Junchang Yu,Kexin Zhao,Hang zhou,Qing Zhang,Hongquan Zhang
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-04-07
卷期号:48 (10): 2651-2651
被引量:4
摘要
In this Letter, a polymer optical fiber (POF) detector with a convex spherical aperture microstructure probe is designed for low-energy and low-dose rate gamma-ray detection. Simulation and experimental results demonstrate that this structure has a higher optical coupling efficiency and that the angular coherence of the detector depends strongly on the depth of the probe micro-aperture. By modeling the relationship between angular coherence and micro-aperture depth, the optimal depth of the micro-aperture is determined. The sensitivity of the fabricated POF detector is 701 cps at 59.5-keV gamma-ray of 2.78 µSv/h and the maximum percentage error of the average count rate at different angles is 5.16%.
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