threshold inversion

The rate equation formalism is used to develop the concepts of laser threshold, population inversion and modulation response.

比例方程式形式用来生成雷射临界点、能态数反转与调变反应的概念。

Direct Measurement of Threshold Voltages of Field Transistor Using Transistors with Feedback of Deep Inversion

利用深度反转层反馈晶体管直接测量场效应管阈值电压

In this paper, combined with the deficiency of NDVI threshold inversion method, we improved the method from two aspects: the vegetation type and soil moisture.

本文结合NDVI阈值反演法的不足之处，从植被用地类型和土壤含水量两个方面进行改进。

Using the latest parameter's data of Yb-Er co-doped Al2O3 films, the results show that Yb3+ co-doping can increase photoluminescence intensity and population inversion and lower the threshold power.

利用Yb-Er共掺Al2O3薄膜的相关数据进行模拟计算，结果显示Yb的掺杂可提高Er3+的荧光强度和反转粒子数，并使实现粒子数反转的阈值泵浦强度最大可降低一个数量级。

For the exactly soluble case of unidirectional ring laser with a homogeneous broadened line, the frequency shift relation, the critical and threshold value of inversion, the phase transition behavior and the features of the two-photon lasers with injected signal are analysed.

就可以精确求解的均匀展宽、单向环形激光器的情形，分析了频率位移关系，反转度的临界值和阈值，相变行为，以及带有外加讯号的双光子激光的特性。