Analogous to a snow avalanche on a steep mountain slope, an incoming light pulse initially frees just a few charge carriers which in turn free others until the original signal is amplified many times.
It is used to excite pressure pulse in a sample by means of a single laser pulse which will lead to the change of charge density on the two electrodes.
它是用单束激光脉冲在样品内激发出一个压力脉冲，该压力脉冲将导致两电极上感应电荷层密度变化。
3
It improved the battery serve life greatly, which using large charge current at beginning, controlling the charge time of constant voltage and using pulsecharge in the end.