基于4H-SiC雪崩光电二极管的日盲紫外单光子探测系统设计

发布时间：2018-01-25 11:13

本文关键词： 日盲紫外探测单光子探测 4H-SiC 雪崩主动恢复　出处：《南京大学》2015年硕士论文　论文类型：学位论文

【摘要】：日盲紫外探测技术在军事和民用领域中发挥着越来越重要的作用。以4H-SiC为代表的宽带隙半导体材料,是固态日盲紫外探测器制备的重要原料。单光子探测技术是超灵敏光信号检测的技术之一,工作于日盲紫外波段的雪崩二极管,结合光学系统和读取电路的设计,可以实现单光子级别的微弱日盲紫外信号响应。因而结合背景受限的紫外探测理论设计的日盲紫外单光子探测系统可被广泛地应用于输变电线路电晕电弧放电检测、高压电气设备局部放电检测、无线光通信及激光测距等多个领域。目前国内外研究工作者对日盲紫外单光子探测技术作了大量研究和探索,并取得了一定的成果。然而,满足实际使用需求的日盲紫外单光子探测系统并不多见。在此背景下,研究并设计满足使用要求的日盲紫外单光子探测系统无疑具有非常重要的意义。4H-SiC芯片本身并不具备完美的日盲探测性能,日间探测环境下的背景辐射仍然制约了其在某些场合下的应用。基于背景受限的紫外探测理论设计的日盲紫外探测系统可以屏蔽太阳背景辐射对探测系统的影响,真正实现日盲紫外探测的性能。基于背景受限的紫外探测理论设计的日盲紫外单光子探测系统可被广泛地应用于输变电线路电晕电弧放电检测、高压电气设备局部放电检测、无线光通信及激光测距等多个领域。本文在查阅国内外文献及研究成果的基础上,介绍了日盲紫外单光子探测系统的背景以及国内外研究现状,研究了以4H-SiC雪崩二极管为探测芯片的日盲紫外单光子探测系统的实现方法,并分析了其未来的应用发展前景。以下是本文完成的主要工作：1)研究了4H-SiC雪崩光电二极管的雪崩特性,设计了脉冲读取及雪崩主动恢复电路,并进行实验验证；2)在研究太阳光谱辐射对日盲紫外探测影响的基础上,根据背景受限的紫外探测理论研究及设计了4H-SiC日盲紫外探测系统的光学系统,并进行实验验证；3)进行系统整合,研制了日盲紫外单光子探测模块并对其进行实验验证。
[Abstract]:Solar blind ultraviolet detection technology is playing a more and more important role in the military and civil fields. 4H-SiC as the representative of broadband gap semiconductor materials. Single photon detection is one of the most sensitive optical signal detection techniques, which work in avalanche diodes in the solar blind ultraviolet band. Combined with optical system and read circuit design. The single photon level weak solar blind ultraviolet signal response can be realized, so the solar blind ultraviolet single photon detection system based on background limited ultraviolet detection theory can be widely used in corona arc discharge detection of transmission and transformer lines. Test. High voltage electrical equipment partial discharge detection, wireless optical communication and laser ranging and other fields. At present, researchers at home and abroad have done a lot of research and exploration on sunblind ultraviolet single-photon detection technology. Some achievements have been made. However, there are few sun-blind ultraviolet single-photon detection systems to meet the practical requirements. It is of great significance to study and design the solar blind ultraviolet single photon detection system. 4H-SiC chip itself does not have the perfect performance of solar blind detection. Background radiation in daytime detection environment still restricts its application in some occasions. The sun-blind ultraviolet detection system based on background limited ultraviolet detection theory can shield the influence of solar background radiation on detection system. . The solar blind single photon detection system based on the background limited ultraviolet detection theory can be widely used in corona arc discharge detection of transmission and transformer lines. High voltage electrical equipment partial discharge detection, wireless optical communication and laser ranging and other fields. This paper on the basis of domestic and foreign literature and research results. This paper introduces the background of the solar blind ultraviolet single photon detection system and the research status at home and abroad, and studies the realization method of the solar blind ultraviolet single photon detection system using 4H-SiC avalanche diode as the detection chip. The main work of this paper is: 1) the avalanche characteristics of 4H-SiC avalanche photodiodes are studied, and the pulse reading and avalanche active recovery circuits are designed. And the experimental verification was carried out. 2) on the basis of studying the influence of solar spectral radiation on solar blind ultraviolet detection, the optical system of 4H-SiC blind ultraviolet detection system is studied and designed according to the background limited ultraviolet detection theory. And the experimental verification was carried out. 3) the solar blind UV single photon detection module is developed and verified by the system integration.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN23;TN312.7

【参考文献】