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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201700754
|2 doi
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|a pubmed25n0905.xml
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|a (DE-627)NLM271525819
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|a (NLM)28466957
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Guo, Qiangbing
|e verfasserin
|4 aut
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|a A Solution-Processed Ultrafast Optical Switch Based on a Nanostructured Epsilon-Near-Zero Medium
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a All the optical properties of materials are derived from dielectric function. In spectral region where the dielectric permittivity approaches zero, known as epsilon-near-zero (ENZ) region, the propagating light within the material attains a very high phase velocity, and meanwhile the material exhibits strong optical nonlinearity. The interplay between the linear and nonlinear optical response in these materials thus offers unprecedented pathways for all-optical control and device design. Here the authors demonstrate ultrafast all-optical modulation based on a typical ENZ material of indium tin oxide (ITO) nanocrystals (NCs), accessed by a wet-chemistry route. In the ENZ region, the authors find that the optical response in these ITO NCs is associated with a strong nonlinear character, exhibiting sub-picosecond response time (corresponding to frequencies over 2 THz) and modulation depth up to ≈160%. This large optical nonlinearity benefits from the highly confined geometry in addition to the ENZ enhancement effect of the ITO NCs. Based on these ENZ NCs, the authors successfully demonstrate a fiber optical switch that allows switching of continuous laser wave into femtosecond laser pulses. Combined with facile processibility and tunable optical properties, these solution-processed ENZ NCs may offer a scalable and printable material solution for dynamic photonic and optoelectronic devices
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|a Journal Article
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|a colloidal nanocrystals
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|a epsilon-near-zero
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|a optical modulation
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|a tunable optical properties
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|a ultrafast photonics
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1 |
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|a Cui, Yudong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yao, Yunhua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ye, Yuting
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Yue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Xueming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Shian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Xiaofeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Qiu, Jianrong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hosono, Hideo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 27 vom: 20. Juli
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:27
|g day:20
|g month:07
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|u http://dx.doi.org/10.1002/adma.201700754
|3 Volltext
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