激光与光电子学进展, 2019, 56 (20): 202419, 网络出版: 2019-10-22
太赫兹波入射到高温等离子体的特性研究 下载: 1215次
Characteristics of Terahertz Wave Propagating in High-Temperature Plasma
表面光学 太赫兹波 高温等离子体 磁化 传输特性 黑障 optics at surfaces terahertz wave high temperature plasma magnetization transmission characteristics blackout
摘要
针对高温等离子体对太赫兹波的传输特性,采用单层介质矩阵传输模型的求解方法,研究太赫兹在等离子体电子密度、厚度、外加磁场强度和温度影响下的变化规律。数值分析结果发现,不同条件下高温等离子体对太赫兹波产生的传输特性不同,等离子体电子密度和厚度越大,反射率越大,透射率越小;外加磁场可以改善衰减情况,因此等离子体电子密度越小,厚底越小,温度越高,对穿过电磁波的影响越小,通过调节外加磁场的大小,避开衰减峰值,可以缓解通信“黑障”现象。
Abstract
A single-layer dielectric matrix transmission model was developed to study the transmission characteristics of terahertz waves in high temperature plasma. The variation in the terahertz wave under the influences of plasma electron density, thickness, applied magnetic field strength, and temperature was studied. The numerical analysis results indicate that under different conditions, the high-temperature plasma exhibits different transmission characteristics for the incident wave. The reflectivity increases and transmittance decreases with increasing plasma-electron density and thickness; then, a magnetic field can be used to improve the attenuation. Therefore, the thickness decreases with decreasing electron density of the plasma, and the influence of the increasing temperature on electromagnetic waves decreases. Adjusting the magnitude of the applied magnetic field and avoiding the attenuation peak can prevent communication blackouts.
李珊珊, 摆玉龙, 马小艳, 孙洪阳. 太赫兹波入射到高温等离子体的特性研究[J]. 激光与光电子学进展, 2019, 56(20): 202419. Shanshan Li, Yulong Bai, Xiaoyan Ma, Hongyang Sun. Characteristics of Terahertz Wave Propagating in High-Temperature Plasma[J]. Laser & Optoelectronics Progress, 2019, 56(20): 202419.