Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Optical Modes of Vibration in an Ionic Crystal Sphere

Not Accessible

Your library or personal account may give you access

Abstract

The long-wave optical modes of vibration in an ionic crystal sphere have been determined, including retardation of the Coulomb forces. These modes, which correspond to coupled excitations of phonons and photons, are also known as polaritons. Their frequencies are complex, the imaginary parts arising from both anharmonic and radiative damping; hence they are virtual modes. It is found that the mode frequencies depend on the radius of the sphere only if retardation is included. The absorption and extinction cross sections for spheres of various sizes are calculated as a function of the frequency of the incident light, and it is shown how the structure in the cross sections is related to the properties of the virtual modes. The theory is used to explain the position and width of an optical absorption peak measured in a polyethylene film containing UO2 particles.

© 1968 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical properties of spatially dispersive dielectric spheres

R. Ruppin
J. Opt. Soc. Am. 71(6) 755-758 (1981)

Optical Properties and Reflectance of Uniaxial Absorbing Crystals*

L. P. Mosteller and F. Wooten
J. Opt. Soc. Am. 58(4) 511-518 (1968)

Propagation along Moving Dielectric Wave Guides*

C. Yeh
J. Opt. Soc. Am. 58(6) 767-770 (1968)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (34)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved