MEASUREMENT OF THE VELOCITY OF CURRENT FILAMENTS IN OPTICALLY TRIGGERED HIGH-GAIN GAAS SWITCHES

被引：36
|
作者：
LOUBRIEL, GM
ZUTAVERN, FJ
HJALMARSON, HP
GALLEGOS, RR
HELGESON, WD
OMALLEY, MW
机构：
[1] Sandia National Laboratories, Albuquerque
来源：
APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 24期
关键词：
D O I：
10.1063/1.111266
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Pictures are presented of the time evolution of current filaments during optically triggered, high gain switching in GaAs. Two filaments are triggered with two laser diode arrays and the time delay between them is varied. When the filament that is triggered first crosses the switch the voltage drops and the other filament ceases to grow. By varying the delay between the lasers, the tip velocity is measured to be 2 +/- 1 x 10(9) cm/s, 100 times larger than the peak drift velocity of carriers in GaAs. This observation supports switching models that rely on carrier generation at the tip of the filament.
引用
收藏
页码：3323 / 3323
页数：1
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