Peverly P J, Wagner R E, Rutherford G H, Marsalli M, Su Q, Grobe R
Intense Laser Physics Theory Unit and Department of Physics, Illinois State University, Normal, Illinois 61790-4560, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Mar;65(3 Pt 1):031908. doi: 10.1103/PhysRevE.65.031908. Epub 2002 Mar 1.
We investigate the validity of the Boltzmann equation to predict the reflection and transmission coefficients for an intensity modulated laser beam passing through a microscopic medium consisting of discrete scatterers. For a one-dimensional model system we demonstrate that the Boltzmann equation works remarkably well for small modulation frequencies, even to describe a medium comprised of only 10 scatterers. Discrepancies can be found only if the modulation wavelength of the laser intensity is commensurate with the spacing between the scatterers and if the medium is sufficiently ordered.
我们研究了玻尔兹曼方程对于预测强度调制激光束穿过由离散散射体组成的微观介质时的反射和透射系数的有效性。对于一维模型系统，我们证明，即使是描述仅由10个散射体组成的介质，玻尔兹曼方程在小调制频率下也能很好地发挥作用。只有当激光强度的调制波长与散射体之间的间距相称，且介质足够有序时，才会发现差异。
