光学与光电技术, 2015, 13 (4): 75, 网络出版: 2015-09-08
复变量双曲正弦高斯光束在左手材料中的传输
Propagation of Complex Variables Sinh-Gaussian Beams Through a Left-Handed Material
文字间用 号隔开空半格左手材料 工作频率 横向光强 光斑尺寸 left-handed material operating frequency transversal intensity spot size
摘要
为了研究复变量双曲正弦高斯光束在左手材料中的传输,利用广义惠更斯-菲涅耳衍射积分法,得到复变量双曲正弦高斯光束在左手材料中的传输表达式,并运用此表达式作数值模拟。仿真结果表明,复变量双曲正弦高斯光束的横向光强、光斑尺寸和束腰位置都可以用左手材料的工作频率来调控。当左手材料的工作频率一定时,随着传输距离的增加光斑尺寸先减小后增大;而当工作频率增大时,光强加强,束腰位置越靠近入射面,但发现束腰宽度不受工作频率的调控。
Abstract
In order to study the propagation of complex variables Sinh-Gaussian beams through a left-handed material, the propagation expressions of complex variables Sinh-Gaussian beams through the left-handed material are deduced by using generalized Huygens-Fresnel diffraction integral for digital simulation. The simulation results show that the transversal intensity, spot size and waist position of complex variables Sinh-Gaussian beams can be managed by the operating frequency of left-handed material. When the operating frequency of left-handed material is certain, the spot size firstly decreases and then increases with the increasing of propagation distance. And when the operating frequency of left-handed material increases, the light intensity is strengthened, and the waist position is closer to the incident surface, but the waist width is not controlled by operating frequency.
黄永超, 张廷蓉. 复变量双曲正弦高斯光束在左手材料中的传输[J]. 光学与光电技术, 2015, 13(4): 75. HUNAG Yong-chao, ZHANG Ting-rong. Propagation of Complex Variables Sinh-Gaussian Beams Through a Left-Handed Material[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2015, 13(4): 75.