基于J型场效应管和电荷放大器的低噪声高增益大动态范围光电探测器

A low-noise,high-gain,and large-dynamic-range photodetector based on a JFET and a charge amplifier

王锦荣 ¹吴双娥 ²米成栋 ²邱炎儿 ²白心爱²

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作者信息

1. 吕梁学院物理系,中国吕梁市,033001;华南理工大学广东省光纤激光材料与应用技术重点实验室,中国广州市,510640
2. 吕梁学院物理系,中国吕梁市,033001
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摘要

设计一种基于J型场效应管和电荷放大器的低噪声、高增益、大动态范围光电探测器,用于贝尔态探测中量子噪声的测量.特定光电二极管的结电容允许硅N沟道J型场效应管2sk152匹配电荷放大器A250的噪声要求.当相干激光功率为50.08μW时,在2.75 MHz分析频率处,光电探测器的电子噪声得到有效抑制,信噪比高达15 dB.通过电感和电容组合,光电探测器的交流和直流支路可以在25.06 μW～17.50 mW的动态范围内线性工作.该光电探测器可以完全满足量子光学实验中贝尔态探测对信噪比和动态范围的要求.

Abstract

We demonstrate a low-noise,high-gain,and large-dynamic-range photodetector(PD)based on a junction field-effect transistor(JFET)and a charge amplifier for the measurement of quantum noise in Bell-state detection(BSD).Particular photodiode junction capacitance allows the silicon N-channel JFET 2sk152 to be matched to the noise requirement for charge amplifier A250.The electronic noise of the PD is effectively suppressed and the signal-to-noise ratio(SNR)is up to 15 dB at the analysis frequency of 2.75 MHz for a coherent laser power of 50.08 μW.By combining of the inductor and capacitance,the alternating current(AC)and direct current(DC)branches of the PD can operate linearly in a dynamic range from 25.06 μW to 17.50 mW.The PD can completely meet the requirements of SNR and dynamic range for BSD in quantum optics experiments.

关键词

量子噪声/贝尔态探测/光电探测器/J型场效应管/电荷放大器

Key words

Quantum noise/Bell-state detection(BSD)/Photodetector(PD)/Junction field-effect transistor(JFET)/Charge amplifier

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基金项目

Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(STIP)(2021L562)

Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(STIP)(2022L573)

Key Research and Development Projects for Attarcting High-Level Scientific and Technological Talents to Lvliang City(2021RC-2-27)

Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques(South China University (2021-06)

Key Research and Development Projects in the Field of Social Development of Lvliang City(2022SHFZ43)

Higher Education Reform and Innovation Project of Shanxi Province,China(J2021718)

Higher Education Reform and Innovation Project of Shanxi Province,China(J2021744)

Higher Education Reform and Innovation Project of Shanxi Province,China(J2021717)

Innovation and Entrepreneurship Training Program for College Students,China(202310812012)

出版年

2024

信息与电子工程前沿(英文)

浙江大学

信息与电子工程前沿(英文)

CSTPCD

影响因子：0.371

ISSN：2095-9184

参考文献量7

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