Accession Number:

AD1100533

Title:

Strong Confinement of Optical Fields Using Localized Surface Phonon Polaritons in Cubic Boron Nitride

Descriptive Note:

Journal Article - Open Access

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States

Report Date:

2018-04-27

Pagination or Media Count:

6.0

Abstract:

Phonon polaritons PhPs are long-lived electromagnetic modes that originate from the coupling of infrared IR photons with the bound ionic lattice of a polar crystal. Cubic-boron nitride cBN is such a polar, semiconductor material which, due to the light atomic masses, can support high-frequency optical phonons. Here we report on random arrays of cBN nanostructures fabricated via an unpatterned reactive ion etching process. Fourier-transform infrared reflection spectra suggest the presence of localized surface PhPs within the Reststrahlen band, with quality factors in excess of 38 observed. These can provide the basis of next-generation IR optical components such as antennas for communication, improved chemical spectroscopies, and enhanced emitters, sources, and detectors.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE