Volume 19, Issue 12 2500333
Research Article

Manipulation of Plasmonic Oxide Inside Transparent Matrices for Boosting Infrared Optical Nonlinearity and Ultrafast Optical Switching

Pengyun Wang

Pengyun Wang

School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Jiahe Yan

Jiahe Yan

School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Haiqiang Zhu

Haiqiang Zhu

Advanced Photonics Technology Lab, College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing, 210023 China

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Pin Gu

Corresponding Author

Pin Gu

Advanced Photonics Technology Lab, College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing, 210023 China

E-mail: [email protected]; [email protected]; [email protected]

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Zuxing Zhang

Corresponding Author

Zuxing Zhang

Advanced Photonics Technology Lab, College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing, 210023 China

E-mail: [email protected]; [email protected]; [email protected]

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Jianrong Qiu

Jianrong Qiu

State Key Lab of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Xiaofeng Liu

Corresponding Author

Xiaofeng Liu

School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 18 March 2025
Citations: 3

Abstract

The integration and manipulation of plasmonic nanostructures inside a stable monolithic medium could be of high interest for solid-state photonic devices. Here, the development of inorganic oxide glasses is demonstrated wherein the growth of plasmonic nanoparticles (NPs) based on indium tin oxide (ITO) through solid-state reaction can be manipulated in a controllable manner. The plasmonic response of the precipitated ITO NPs contributes to boosted and tunable infrared nonlinear optical (NLO) response associated with localized surface plasmon resonance (LSPR) of the ITO NPs. It is further elucidated that the plasmon coupling between ITO NPs in the glass matrix plays an essential role in the 100-fs scale NLO response by accelerating the relaxation of hot electrons, such that the NLO response speed can be enhanced to exceed that in typical noble metal-based plasmonic nanostructures. The ultrafast absorptive optical nonlinearity with a high modulation depth could enable diverse applications, as exemplified here by the robust optical switching for mode-locked pulse generation in fiber lasers. These results could have strong implications for the development of integrated solid-state plasmonic devices for photonics applications.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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