Quantum emission of a medium with a time-dependent refractive index

V. Hizhnyakov
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引用次数: 31

Abstract

Quantum emission of photons caused by sudden change of the refractive index of a medium is considered. This emission appears due to time dependence of the zeroth quantum state of the field and is a non-stationary analogue of the Casimir effect. A model-exact solution of the problem is presented. If sudden changes of the refractive index are caused by excitation of a semiconductor near to a band-to-band transition by a synchroneously pumped subpicosecond dye laser the intensity of the quantum emission is approximately 10-9 W in the infrared. The analogy of the effect with and its difference from, the Hawking and the Unruh radiations are discussed.
具有随时间折射率的介质的量子发射
研究了由介质折射率突变引起的光子量子发射。这种发射是由于场的第零量子态的时间依赖性而出现的,是卡西米尔效应的非稳态模拟。给出了该问题的模型精确解。如果用同步泵浦的亚皮秒染料激光器激发靠近带到带跃迁的半导体引起折射率的突然变化,则量子发射的强度在红外中约为10-9 W。讨论了该效应与霍金辐射和安鲁辐射的相似性及其区别。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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