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作 者:姜永远[1] 张永强[1] 时红艳[1] 侯春风[1] 孙秀冬[1]
出 处:《物理学报》2007年第2期798-804,共7页Acta Physica Sinica
基 金:国家自然科学基金(批准号:60508005);黑龙江省留学归国人员基金(批准号:LC05C02)资助的课题~~
摘 要:分析了单轴各向异性左手介质表面的Goos-Hanchen位移,分别给出了光轴与两种介质的界面垂直和平行情形下的Goos-Hanchen位移解析表达式,并分析了Goos-Hanchen位移产生的条件以及位移的正负情况.还采用菲涅尔近似的方法给出了临界角附近的Goos-Hanchen位移表达式,结果表明临界角附近的Goos-Hanchen位移是入射光的束腰半径和入射角的函数,并且给出了临界角入射时Goos-Hanchen位移的较为简洁的近似表达式,这样就在整个角度的取值范围内都给出了Goos-Hanchen位移的表达式.In this paper, the Goos-Haonchen shift on the interface of uniaxially anisotropic left-handed materials is investigated exhaustively, and the analytical expressions of Goos-Haonchen shift is presented for the cases of the optical axis being perpendicular and parallel to the interface, respectively. Moreover, the conditions for the existence and the sign of Goos-Haonchen shift are determined. Under Fresnel approximation, the expression of Goos-Haonchen shift around the critical angle is obtained, and the result shows that the shift around the critical angle is a function of the beam waist and incident angle. A simple approximate expression of the lateral shift with incident angle equals the critical angle is also presented. Thus, the general expression of Goos-Haonchen shift for any incident angles is obtained.
关 键 词:Goos-Haonchen位移 左手介质 单轴各向异性 临界角
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