Report

Optical Properties of an Ionic-Type Phononic Crystal

+ See all authors and affiliations

Science  11 Jun 1999:
Vol. 284, Issue 5421, pp. 1822-1824
DOI: 10.1126/science.284.5421.1822

You are currently viewing the abstract.

View Full Text

Abstract

An ionic-type phononic crystal composed of two ferroelectric media with opposite spontaneous polarization aligned periodically in a superlattice structure was studied theoretically and experimentally. The coupling between vibrations of the superlattice and the electromagnetic waves results in various long-wavelength optical properties, such as microwave absorption, dielectric abnormality, and polariton excitation, that exist originally in ionic crystals. The results show that this artificial crystal structure can be used to simulate the microscopic physical processes in real crystals.

View Full Text