论文标题
增益切换的半导体激光器中的相随机性：随机微分方程分析
Phase randomness in a gain-switched semiconductor laser: stochastic differential equation analysis
论文作者
论文摘要
我们在将其用作量子熵源的情况下，对增益开关半导体激光器中的相随机性进行了理论分析。数值模拟表明相扩散r.m.s.表现出对偏置电流的非线性依赖性，这可能具有重要的实际重要性，尤其是应用于高速光学量子随机数发生器。结果表明，不能总是假定激光脉冲之间的相扩散表现出所需的效率，尤其是在高脉冲重复速率下。还揭示了增益饱和严重影响R.M.S.相扩散的价值，本质上是确定其依赖泵电流的非线性程度。
We performed theoretical analysis of the phase randomness in a gain-switched semiconductor laser in the context of its application as a quantum entropy source. Numerical simulations demonstrate that phase diffusion r.m.s. exhibits non-linear dependence on the bias current, which could be of significant practical importance, particularly, in application to high-speed optical quantum random number generators. It is shown that phase diffusion between laser pulses cannot always be assumed to exhibit required efficiency, particularly, at high pulse repetition rates. It was also revealed that the gain saturation significantly affects the r.m.s. value of the phase diffusion and, in essence, determines the degree of non-linearity of its dependence on the pump current.
