基于光电倍增管模块的探测系统增益-噪声最优化研究  

Research on Gain-noise Optimization of Detection System Based on Photomultiplier Tube Modules

作　　者：刘冬梅[1] 张现乾[1] 赵蓓蕾[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009

出　　处：《光电子技术》2017年第2期94-98,共5页Optoelectronic Technology

基　　金：国家自然科学基金资助项目(No.11105037)

摘　　要：采用光电倍增管模块和电流放大器搭建了光电检测系统。详细推理了光电倍增管模块的控制电压和内部增益的关系、光电倍增管模块的信噪比以及电流放大器的信噪比。在总的光子-电压增益(3×10~9)和频率带宽(200kHz)固定的前提下,对光电倍增管模块的控制电压(内部增益)和电流放大器的增益进行了多组配比和噪声测试。测试数据表明,当控制电压为0.42V,前置放大器增益为105 V/A,电压放大器增益为4V/V时,系统的输出噪声最小。A photoelectric detection system was built using the photomultiplier tube module and current amplifier.The relationship between the control voltage and the intrinsic gain of the photomultiplier module was deduced in detail,and the signal-to-noise ratio of the photomultiplier module and the current amplifier were described respectively.Under the premise of the total photon-to-voltage gain（3×10~9）and the frequency bandwidth（200kHz）,the control voltage（internal gain）of the photomultiplier tube module and the gain of the current amplifier were subjected to multiple gain allocations and noise tests.The test data show that when the control voltage is 0.42 V,the preamplifier gain is 105 V/A,the voltage amplifier gain is 4V/V,and the system output noise is minimal.

关 键 词：光电倍增管模块 控制电压 电流放大器 增益配比 

分 类 号：TN152[电子电信—物理电子学]