磁介电材料的辐射压力理论
Theory of the radiation pressure on magneto-dielectric materials
摘要：
我们提出了一个经典的磁介质材料的线性响应理论，并确定了极化激元色散关系。得到了电磁场的涨落谱，并给出了它们的光学参量的极化激元和规则。对具有多个极化激元分支的系统的电磁场进行了三维量子化，并将场算符转换为适合于平行光束的一维形式。我们表明，场算子交换关系同意与以前的计算，忽略极化激元效应。亚伯拉罕（动力学）和闵可夫斯基（正则）动量算符的介绍和相应的单光子动量的识别。这些和它们的角类似物的对易关系支持识别，特别是闵可夫斯基动量与光的正则动量。我们利用麦克斯韦方程组的Heaviside-Larmor对称性，非常直接地得到作用在磁介质上的Einsetin-Laub力密度。计算了光脉冲入射到半无限大样品时，样品表面和体积对辐射压力的贡献。
英文摘要：
We present a classical linear response theory for a magneto-dielectric material and determine the polariton dispersion relations. The electromagnetic field fluctuation spectra are obtained and polariton sum rules for their optical parameters are presented. The electromagnetic field for systems with multiple polariton branches is quantised in 3 dimensions and field operators are converted to 1-dimensional forms appropriate for parallel light beams. We show that the field-operator commutation relations agree with previous calculations that ignored polariton effects. The Abraham (kinetic) and Minkowski (canonical) momentum operators are introduced and their corresponding single-photon momenta are identified. The commutation relations of these and of their angular analogues support the identification, in particular, of the Minkowski momentum with the canonical momentum of the light. We exploit the Heaviside-Larmor symmetry of Maxwell's equations to obtain, very directly, the Einsetin-Laub force density for action on a magneto-dielectric. The surface and bulk contributions to the radiation pressure are calculated for the passage of an optical pulse into a semi-infinite sample.
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