摘要
应用多光子非线性Compton散射模型和有限时域差分法,对Compton散射对磁化等离子体光子晶体缺陷模密温特性的影响进行了理论分析和数值模拟。结果表明,与Compton散射前的情况相比,Compton散射使低温低频处光子禁带中存在缺陷模的明显度降低,缺陷模频率增大,缺陷模和透射率峰值减小;使高温高频处缺陷模和透射率峰值、缺陷模频率显著增大,禁带宽减小,缺陷模位置向高频方向移动。随着电子密度的增大,散射减小了禁带增大效应和缺陷模减小效应,增强了缺陷模频率增大效应;随着电子密度的降低,散射增强了禁带变窄效应、缺陷模峰值增大效应和缺陷模频率减小效应。利用Compton散射,可实现对缺陷模密温特性的有效控制。
Using multi-photon nonlinear Compton scattering model and finite-difference time-domain method, the in- fluences of Compton scattering on the characteristic of density and temperature of the defect mode in magnetized plasma photonic crystals are analysed by using theories and numerical analogue. The results show that the clear degree of the de- fect model in the photonic band gap of the low temperature and frequency is clearly lowered by Compton scattering than before the Compton scattering, the frequency is increased, the defect model and its transmissivity crests, photonic band gap widths are clearly decreased, the defect models and its transmissivity crests in the high temperature and frequency are clearly increased, and the defect model places are moved to the high frequencies. The increased effect of the band gap and decreased effect of the defect model are decreased by Compton scattering along with the electron density increased, the in- creased effect of the defect model frequency is creased. The effects of the band gap width is decreased, the increased effect of the defect model crest and decreased effect of the defect model frequency are increased along with the electron density decreased. The effect control to the characteristic of defect model density and temperature can be achieved by using Compton scattering.
出处
《光学技术》
CAS
CSCD
北大核心
2012年第4期482-487,共6页
Optical Technique
基金
河南省基础与前沿技术研究资助项目(092300410227)
