期刊
OPTICS LETTERS
卷 43, 期 9, 页码 2177-2180出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.43.002177
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资金
- National Science Foundation (NSF) [DMR-1719857, ECCS-1542081]
- Office of Naval Research (ONR)
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. (C) 2018 Optical Society of America
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