The complex parameters of dielectric slabs can be reconstructed according to thescattered field data if the slabs are illuminated by a harmonic electromagnetic wave and thescattered field is measured.This paper descri...The complex parameters of dielectric slabs can be reconstructed according to thescattered field data if the slabs are illuminated by a harmonic electromagnetic wave and thescattered field is measured.This paper describes a method for reconstruction of the parametersof single or double inhomogeneous lossy dielectric slabs.The numerical results are demonstrated.展开更多
We obtain a large positive lateral shift of a light beam reflected from a layered configuration due to the formation of the unusual standing wave, which acts like the forward surface wave. An explicitly analytic condi...We obtain a large positive lateral shift of a light beam reflected from a layered configuration due to the formation of the unusual standing wave, which acts like the forward surface wave. An explicitly analytic condition to obtain the large lateral shift is presented. Finally we present a numerical simulation for the lateral displacement of a Gaussian beam.展开更多
The reflection and transmission problem of an electromagnetic slow-wave by a uniformly moving dielectric slab was investigated theoretically.The relationships among the field vectors of the incident,reflected and tran...The reflection and transmission problem of an electromagnetic slow-wave by a uniformly moving dielectric slab was investigated theoretically.The relationships among the field vectors of the incident,reflected and transmitted waves,and the reflection and transmission coefficients were derived based on the electromagnetic theory and the principle of special relativity.The numerical analysis shows that at a small mechanical velocity the reflection coefficient of the electromagnetic slow-wave can be close to unit by choosing an appropriate period and mode-order;this is obviously different from that of a fast wave.The results are significant for research on electromagnetics and electrodynamics,and may have applicability to other fields.展开更多
文摘The complex parameters of dielectric slabs can be reconstructed according to thescattered field data if the slabs are illuminated by a harmonic electromagnetic wave and thescattered field is measured.This paper describes a method for reconstruction of the parametersof single or double inhomogeneous lossy dielectric slabs.The numerical results are demonstrated.
基金Supported by the National Natural Science Foundation of China under Grant No 10547138.
文摘We obtain a large positive lateral shift of a light beam reflected from a layered configuration due to the formation of the unusual standing wave, which acts like the forward surface wave. An explicitly analytic condition to obtain the large lateral shift is presented. Finally we present a numerical simulation for the lateral displacement of a Gaussian beam.
基金supported by the National Natural Science Foundation of China(60171014,50577029,and50777023)
文摘The reflection and transmission problem of an electromagnetic slow-wave by a uniformly moving dielectric slab was investigated theoretically.The relationships among the field vectors of the incident,reflected and transmitted waves,and the reflection and transmission coefficients were derived based on the electromagnetic theory and the principle of special relativity.The numerical analysis shows that at a small mechanical velocity the reflection coefficient of the electromagnetic slow-wave can be close to unit by choosing an appropriate period and mode-order;this is obviously different from that of a fast wave.The results are significant for research on electromagnetics and electrodynamics,and may have applicability to other fields.
