Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect

The Raman effect, inelastic scattering of light by lattice vibrations (phonons), produces an optical response closely tied to a material’s crystal structure. Here we show that resonant optical excitation of IR and Raman phonons gives rise to a Raman-scattering effect that can induce giant shifts to...

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Autores principales:	Guru Khalsa, Nicole A. Benedek, Jeffrey Moses
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/09b2cf485a8345089abef61779d0c246
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spelling	oai:doaj.org-article:09b2cf485a8345089abef61779d0c2462021-12-02T14:52:27ZUltrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect10.1103/PhysRevX.11.0210672160-3308https://doaj.org/article/09b2cf485a8345089abef61779d0c2462021-06-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.021067http://doi.org/10.1103/PhysRevX.11.021067https://doaj.org/toc/2160-3308The Raman effect, inelastic scattering of light by lattice vibrations (phonons), produces an optical response closely tied to a material’s crystal structure. Here we show that resonant optical excitation of IR and Raman phonons gives rise to a Raman-scattering effect that can induce giant shifts to the refractive index and induce new optical constants that are forbidden in the equilibrium crystal structure. We complete the description of light-matter interactions mediated by coupled IR and Raman phonons in crystalline insulators—currently the focus of numerous experiments aiming to dynamically control material properties—by including a forgotten pathway through the nonlinear lattice polarizability. Our work expands the toolset for control and development of new optical technologies by revealing that the absorption of light within the terahertz gap can enable control of optical properties of materials over a broad frequency range.Guru KhalsaNicole A. BenedekJeffrey MosesAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 2, p 021067 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Guru Khalsa Nicole A. Benedek Jeffrey Moses Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect
description	The Raman effect, inelastic scattering of light by lattice vibrations (phonons), produces an optical response closely tied to a material’s crystal structure. Here we show that resonant optical excitation of IR and Raman phonons gives rise to a Raman-scattering effect that can induce giant shifts to the refractive index and induce new optical constants that are forbidden in the equilibrium crystal structure. We complete the description of light-matter interactions mediated by coupled IR and Raman phonons in crystalline insulators—currently the focus of numerous experiments aiming to dynamically control material properties—by including a forgotten pathway through the nonlinear lattice polarizability. Our work expands the toolset for control and development of new optical technologies by revealing that the absorption of light within the terahertz gap can enable control of optical properties of materials over a broad frequency range.
format	article
author	Guru Khalsa Nicole A. Benedek Jeffrey Moses
author_facet	Guru Khalsa Nicole A. Benedek Jeffrey Moses
author_sort	Guru Khalsa
title	Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect
title_short	Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect
title_full	Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect
title_fullStr	Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect
title_full_unstemmed	Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect
title_sort	ultrafast control of material optical properties via the infrared resonant raman effect
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/09b2cf485a8345089abef61779d0c246
work_keys_str_mv	AT gurukhalsa ultrafastcontrolofmaterialopticalpropertiesviatheinfraredresonantramaneffect AT nicoleabenedek ultrafastcontrolofmaterialopticalpropertiesviatheinfraredresonantramaneffect AT jeffreymoses ultrafastcontrolofmaterialopticalpropertiesviatheinfraredresonantramaneffect
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Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect

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