Journal
ADVANCED OPTICAL MATERIALS
Volume 9, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202001958
Keywords
boron nitride; phonon‐ polaritons; strong coupling; surface enhanced infrared absorption
Categories
Funding
- Graphene Flagship (Core2)
- Graphene Flagship (Core3)
- Spanish Ministry of Science and Innovation of the Maria de Maeztu Units of Excellence Programme [MDM-2016-0618]
- Spanish Ministry of Science and Innovation [RTI2018-094830-B-100, RTI2018-094861-B-100, PID2019-107432GB-I00]
- Basque Government [GIU18/202, KK-2018/00001, IT1164-19, PRE_2018_2_0253, PRE_2017_2_0052]
- National Science Foundation [CMMI 1538127]
- II-VI Foundation
Ask authors/readers for more resources
Phonon-polaritons, emerging as a powerful platform for nanophotonic applications, can concentrate light into extreme sub-wavelength scales and have longer phonon lifetimes compared to plasmonic counterparts. By using monoisotopic B-10 hexagonal boron nitride, nanoresonators with increased quality factors are obtained, allowing for the sensing of nanometric-thick films of molecules. Additionally, strong coupling between molecular vibrations and phonon-polariton resonance can be achieved even in monoisotopic h-BN ribbons.
Phonon-polaritons, mixed excitations of light coupled to lattice vibrations (phonons), are emerging as a powerful platform for nanophotonic applications. This is because of their ability to concentrate light into extreme sub-wavelength scales and because of their longer phonon lifetimes compared to their plasmonic counterparts. In this work, the infrared properties of phonon-polaritonic nanoresonators made of monoisotopic B-10 hexagonal boron nitride (h-BN) are explored, a material with increased phonon-polariton lifetimes compared to naturally abundant h-BN due to reduced photon scattering from randomly distributed isotopes. An average relative improvement of 50% of the quality factor of monoisotopic h-BN nanoresonators is obtained with respect to nanoresonators made of naturally abundant h-BN, allowing for the sensing of nanometric-thick films of molecules through both surface-enhanced absorption spectroscopy and refractive index sensing. Further, even strong coupling between molecular vibrations and the phonon-polariton resonance in monoisotopic h-BN ribbons can be achieved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available