Strong confinement of optical fields using localized surface phonon polaritons in cubic boron nitride

Ioannis Chatzakis; Athith Krishna; James Culbertson; Nicholas Sharac; Alexander J. Giles; Michael G. Spencer; Joshua D. Caldwell

doi:10.1364/OL.43.002177

Strong confinement of optical fields using localized surface phonon polaritons in cubic boron nitride

Ioannis Chatzakis, Athith Krishna, James Culbertson, Nicholas Sharac, Alexander J. Giles, Michael G. Spencer, Joshua D. Caldwell

Physics

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16 Scopus citations

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.

Original language	English
Pages (from-to)	2177-2180
Number of pages	4
Journal	Optics Letters
Volume	43
Issue number	9
DOIs	https://doi.org/10.1364/OL.43.002177
State	Published - May 1 2018

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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.",

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AU - Chatzakis, Ioannis

AU - Krishna, Athith

AU - Culbertson, James

AU - Sharac, Nicholas

AU - Giles, Alexander J.

AU - Spencer, Michael G.

AU - Caldwell, Joshua D.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - 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.

AB - 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.

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Strong confinement of optical fields using localized surface phonon polaritons in cubic boron nitride

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