High-injection carrier dynamics generated by MeV heavy ions impacting high-speed photodetectors
High-injection carrier dynamics generated by MeV heavy ions impacting high-speed photodetectors
复制标题
MeV 重离子撞击高速光电探测器产生的高注入载流子动力学
DOI：
10.1063/1.1947381
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发表时间：
2005
影响因子：
3.2
通讯作者：
H. Itoh
中科院分区：
文献类型：
--
作者：
J. Laird;T. Hirao;S. Onoda;H. Itoh
高速光电探测器中高能离子碰撞产生的单粒子瞬变会导致空间等辐射环境中光通信的误码率下降。特别是高能重离子，产生具有皮秒时间分布的亚微米电子-空穴对等离子体，导致超高注入载流子动力学，从而产生巨大的空间电荷效应。这些空间电荷效应会干扰局部电场，从而决定单个事件瞬变的峰值和持续时间。本文研究了聚焦单MeV重离子辐照的Sip-i-n光电探测器在不同离子能量范围内的暂态响应，以保证相同的射程终点和不同的平均等离子体密度。借助于三维技术计算机辅助设计软件，我们讨论了高注入效应在时空反应演化中的作用。测量结果和仿真结果均表明该方法是可行的。
The generation of single event transients generated by the impact of high-energy ions in high-speed photodetectors leads to bit error rate degradation in optical communications in radiation hard environments such as space. High-energy heavy ions, in particular, generate a submicron electron-hole pair plasma with a picosecond temporal profile that results in ultrahigh-injection carrier dynamics which induce large space-charge effects. These space-charge effects disturb the local electric field, thereby determining the peak and duration of a single event transient. In this paper, we examine the transient response of Si p-i-n photodetectors irradiated with focused single MeV heavy ions for a range of ion energies chosen to ensure the same end of range but different average plasma densities. We discuss the role of high-injection effects on the evolving spatiotemporal response with the aid of three-dimensional technology computer-aided design software. The result of both measurement and simulation points to ch...