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面向射频信号A/D采样的高速光电导开关设计与研究

Design and Research of A/D Sampling High-Speed Photoconductive Switch for Radio-Frequency Signal

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摘要

对基于铟镓砷(InGaAs)材料体系的共面波导型光电导开关进行了理论分析,并研究了开关在无光照的暗态和激光照射的亮态情况下射频信号的传输性能。采用工作波长为1550 nm、脉宽为96 fs、重复频率为103.2 MHz的激光脉冲触发开关对445 MHz的射频信号进行采样,结果表明,该高速光电导开关能实现射频信号的带通采样,同时减小了开关的载流子寿命,有利于实现更高频率的信号采样。

Abstract

Theoretical analysis of the coplanar waveguide photoconductive switch based on InGaAs material system is carried out, and the transmission performance of the radio-frequency (RF) signal in the dark state without illumination and the bright state with laser irradiation is studied. A laser pulse trigger switch with a working wavelength of 1550 nm, a pulse width of 96 fs and a repetition rate of 103.2 MHz is used to sample the 445 MHz RF signal. Experimental results confirm that the high-speed photoconductive switch can realize the bandpass sampling of the RF signal, while reducing the carrier lifetime of the switch, which is conductive to achieving higher frequency signal sampling.

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中图分类号:TN29

DOI:10.3788/LOP57.092002

所属栏目:光计算

基金项目:国家自然科学基金、江苏省自然科学基金、江苏省高校自然科学基金重大项目;

收稿日期:2019-09-04

修改稿日期:2019-09-20

网络出版日期:2020-05-01

作者单位    点击查看

常明:南京师范大学物理科学与技术学院, 江苏 南京 210023
胡锐:北京无线电测量研究所, 北京 100854
汪弋平:南京师范大学物理科学与技术学院, 江苏 南京 210023
夏巍:南京师范大学物理科学与技术学院, 江苏 南京 210023
程云杰:南京师范大学物理科学与技术学院, 江苏 南京 210023

联系人作者:汪弋平(jeremy_ff@sina.com)

备注:国家自然科学基金、江苏省自然科学基金、江苏省高校自然科学基金重大项目;

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引用该论文

Chang Ming,Hu Rui,Wang Yiping,Xia Wei,Cheng Yunjie. Design and Research of A/D Sampling High-Speed Photoconductive Switch for Radio-Frequency Signal[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092002

常明,胡锐,汪弋平,夏巍,程云杰. 面向射频信号A/D采样的高速光电导开关设计与研究[J]. 激光与光电子学进展, 2020, 57(9): 092002

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