Inertial and interference effects in optical spectroscopy

12th Europhysical Conference on Defects in Insulating Materials

材料科学;物理学

Karstens, W.^1 ; Smith, D.Y.^2,3

Saint Michael's College, Colchester

VT

05439, United States^1

University of Vermont, Physics, 82 University Place, Burlington

VT

05405, United States^2

Argonne National Laboratory, 9700 South Cass Avenue, Argonne

IL

60439, United States^3

关键词: Displacement currents;    Forward propagation;    Interference effects;    Material components;    Optical modeling;    Optical spectroscopy;    Polarization current;    Vacuum polarization;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/80/1/012012/pdf
DOI  :  10.1088/1757-899X/80/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Interference between free-space and material components of the displacement current plays a key role in determining optical properties. This is illustrated by an analogy between the Lorentz optical model and a-c circuits. Phase shifts in material-polarization currents, which are inertial, relative to the non-inertial vacuum-polarization current cause interference in the total displacement current and, hence, variation in E-M wave propagation. If the displacement-current is reversed, forward propagation is inhibited yielding the semimetallic reflectivity exhibited by intrinsic silicon. Complete cancellation involves material currents offsetting free-space currents to form current-loops that correspond to plasmons.