共振线附近极化介质的电磁辐射

Electro-magnetic Radiation of Polarization Medium in Vicinity of Resonance

摘要:

在经典力学框架内,把偶极子运动方程化为含有二次项和三次项的非线性微分方程;用多尺度法找到了系统的近似解;讨论了共振线附近极化介质的光电性质。揭示了系统的倍频、分频、和频与差频等效应;导出了介质的一阶和二阶极化系数;分析了系统在ω≈ω0/3附近的共振行为,并计算了它的瞬时辐射强度和平均辐射强度。

Abstract:

In the framework of classical mechanics, the motion equation of the dipole is reduced to nonlinear differential equations with the quadratic and cubic terms. The approximate solution of the system is found by multi-scale method, and the opto-electrical properties of the polarization medium in vicinity of resonance lines are discussed. The effects for multiplier frequency, division frequency, sum frequency and difference frequency are revealed. It is derived the first-order and second-order polarization coefficients of the media and analyzed the resonance behavior of the dipole in vicinity of ω≈ω₀/3 fractional frequency. The instantaneous radiation intensity and the average radiation intensity are calculated.