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Title: Large optical nonlinearity of ITO nanorods for sub-picosecond all-optical modulation of the full-visible spectrum

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms12892· OSTI ID:1362297

Optical nonlinearity induced by intense optical excitation of mobile electrons in metallic nanostructures can provide dynamic tuning of their electromagnetic response, which is potentially useful for all-optical information processing. Here we report on the sub-picosecond optical nonlinearity of indium tin oxide nanorod arrays (ITO-NRAs) following intraband, on-plasmon-resonance optical pumping, which enables modulation of the full-visible spectrum with large absolute change of transmission, favorable spectral tunability and beam-steering capability. We semi-quantitatively model the permittivity change, whose large amplitude stems from a significant electron redistribution under intraband pumping due to the low electron concentration. Further, we observe a transient response in the microsecond regime associated with the slow lattice cooling, which arises from the large aspect-ratio and low thermal conductivity of ITO-NRAs. Finally, our results demonstrate that all-optical control of the visible spectrum can be achieved by using heavily doped wide-bandgap semiconductors in their transparent regime with speed faster than that of noble metals.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF) - Directorate for Mathematical and Physical Sciences Division of Materials Research (MPS-DMR); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1362297
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (15)

Hot-Electron-Assisted Femtosecond All-Optical Modulation in Plasmonics journal January 2018
A Tunable Multigate Indium-Tin-Oxide-Assisted All-Dielectric Metasurface journal February 2018
Light-Induced Tuning and Reconfiguration of Nanophotonic Structures: Light-Induced Tuning and Reconfiguration of Nanophotonic Structures journal August 2017
Photocarrier‐Induced Active Control of Second‐Order Optical Nonlinearity in Monolayer MoS 2 journal January 2020
Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation journal June 2017
Slow thermal equilibration in methylammonium lead iodide revealed by transient mid-infrared spectroscopy journal July 2018
Surface oxygen-containing defects of graphene nanosheets with tunable nonlinear optical absorption and refraction journal January 2018
Ultrafast and broadband optical nonlinearity in aluminum doped zinc oxide colloidal nanocrystals journal January 2019
Tunable near-infrared epsilon-near-zero and plasmonic properties of Ag-ITO co-sputtered composite films journal February 2018
The IR plasmonic properties of sub-wavelength ITO rod arrays predicted by anisotropic effective medium theory journal November 2019
Material platforms for optical metasurfaces journal June 2018
Tunable all-dielectric metasurface for phase modulation of the reflected and transmitted light via permittivity tuning of indium tin oxide journal January 2019
Tunable near-infrared epsilon-near-zero and plasmonic properties of Ag-ITO co-sputtered composite films text January 2018
Tunable near-infrared epsilon-near-zero and plasmonic properties of Ag-ITO co-sputtered composite films text January 2018
Correction: Corrigendum: Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation journal August 2017