强激光与粒子束, 2018, 30 (6): 063002, 网络出版: 2018-06-12
组合脉冲内间隔对限幅器热损伤效应的影响
Influence of pulse interval on thermal damage process of PIN limiter
摘要
基于物理模型法研究PIN限幅器二极管的微波脉冲热效应, 研究了间隔1~20 ns的两个微波脉冲构成的组合脉冲与单个长脉冲对于器件峰值温度的影响。仿真结果表明: 带有间隔的组合脉冲相对于长脉冲温升更明显, 不同型号二极管的最佳时间间隔不同, 与I层厚度成正相关的作用。分析了脉冲间隔的热效应机理, 是载流子恢复引起下一个脉冲的尖峰泄漏加速升温, 以及P区温度升高使得本征载流子浓度增加引起电热正反馈共同作用的结果。
Abstract
Based on the device physics simulation, focusing on the influence of pulse interval on thermal damage process of PIN limiter, the peak temperature of combined pulses with different pulse interval from 1 to 20 ns is studied. Numerical simulation results show that the pulse interval in which the device temperature rises most has a positive relationship with intrinsic region thickness. The thermal breakdown mechanism is analyzed. It is the spike leakage of the second sub-pulse that makes the temperature rise speed up. And the high temperature of the P-type region also causes the electrothermal feedback which makes it easier to get higher temperature.
参考文献
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王明, 马弘舸. 组合脉冲内间隔对限幅器热损伤效应的影响[J]. 强激光与粒子束, 2018, 30(6): 063002. Wang Ming, Ma Hongge. Influence of pulse interval on thermal damage process of PIN limiter[J]. High Power Laser and Particle Beams, 2018, 30(6): 063002.
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