Tip-enhanced second harmonic generation from a single NaNbO3 nanocrystal

Gengxu Chen; E. Wu; Chengjie Ding; Quanlan Xiao; Xueting Ci; Yan Liu; Youying Rong; Botao Wu; Jianrong Qiu; Heping Zeng

doi:10.1109/JSTQE.2015.2413406

Tip-enhanced second harmonic generation from a single NaNbO₃ nanocrystal

Gengxu Chen, E. Wu, Chengjie Ding, Quanlan Xiao, Xueting Ci, Yan Liu, Youying Rong, Botao Wu, Jianrong Qiu, Heping Zeng

Institute for Advanced Study in Precision Spectroscopy

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We demonstrated the enhanced second harmonic generation (SHG) fromasingle sodium niobate (NaNbO₃) nanocrystal by approaching a metal tip on top of it. By scanning a laser-focused NaNbO₃ nanocrystal with a gold-coated tip, the mapping of the enhanced SHG from the nanocrystal was obtained. We observed that the SHG of the single NaNbO₃ nanocrystal was strongly enhanced with the gold-coated tip on the top of it. And the enhancement factor showed strong dependence on the excitation polarization and the excitation power. An over 12-fold tip enhancement was observed when the excitation power was 12 mW.

Original language	English
Article number	2413406
Pages (from-to)	290-294
Number of pages	5
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	21
Issue number	4
DOIs	https://doi.org/10.1109/JSTQE.2015.2413406
State	Published - 1 Jul 2015

Keywords

Polarization dependence
Power dependence
Second harmonic generation (SHG)
Single sodium niobate (NaNbO) nanocrystal
Tip enhancement

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10.1109/JSTQE.2015.2413406

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title = "Tip-enhanced second harmonic generation from a single NaNbO3 nanocrystal",

abstract = "We demonstrated the enhanced second harmonic generation (SHG) fromasingle sodium niobate (NaNbO3) nanocrystal by approaching a metal tip on top of it. By scanning a laser-focused NaNbO3 nanocrystal with a gold-coated tip, the mapping of the enhanced SHG from the nanocrystal was obtained. We observed that the SHG of the single NaNbO3 nanocrystal was strongly enhanced with the gold-coated tip on the top of it. And the enhancement factor showed strong dependence on the excitation polarization and the excitation power. An over 12-fold tip enhancement was observed when the excitation power was 12 mW.",

keywords = "Polarization dependence, Power dependence, Second harmonic generation (SHG), Single sodium niobate (NaNbO) nanocrystal, Tip enhancement",

author = "Gengxu Chen and E. Wu and Chengjie Ding and Quanlan Xiao and Xueting Ci and Yan Liu and Youying Rong and Botao Wu and Jianrong Qiu and Heping Zeng",

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doi = "10.1109/JSTQE.2015.2413406",

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T1 - Tip-enhanced second harmonic generation from a single NaNbO3 nanocrystal

AU - Chen, Gengxu

AU - Wu, E.

AU - Ding, Chengjie

AU - Xiao, Quanlan

AU - Ci, Xueting

AU - Liu, Yan

AU - Rong, Youying

AU - Wu, Botao

AU - Qiu, Jianrong

AU - Zeng, Heping

PY - 2015/7/1

Y1 - 2015/7/1

N2 - We demonstrated the enhanced second harmonic generation (SHG) fromasingle sodium niobate (NaNbO3) nanocrystal by approaching a metal tip on top of it. By scanning a laser-focused NaNbO3 nanocrystal with a gold-coated tip, the mapping of the enhanced SHG from the nanocrystal was obtained. We observed that the SHG of the single NaNbO3 nanocrystal was strongly enhanced with the gold-coated tip on the top of it. And the enhancement factor showed strong dependence on the excitation polarization and the excitation power. An over 12-fold tip enhancement was observed when the excitation power was 12 mW.

AB - We demonstrated the enhanced second harmonic generation (SHG) fromasingle sodium niobate (NaNbO3) nanocrystal by approaching a metal tip on top of it. By scanning a laser-focused NaNbO3 nanocrystal with a gold-coated tip, the mapping of the enhanced SHG from the nanocrystal was obtained. We observed that the SHG of the single NaNbO3 nanocrystal was strongly enhanced with the gold-coated tip on the top of it. And the enhancement factor showed strong dependence on the excitation polarization and the excitation power. An over 12-fold tip enhancement was observed when the excitation power was 12 mW.

KW - Polarization dependence

KW - Power dependence

KW - Second harmonic generation (SHG)

KW - Single sodium niobate (NaNbO) nanocrystal

KW - Tip enhancement

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U2 - 10.1109/JSTQE.2015.2413406

DO - 10.1109/JSTQE.2015.2413406

M3 - 文章

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VL - 21

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JO - IEEE Journal of Selected Topics in Quantum Electronics

JF - IEEE Journal of Selected Topics in Quantum Electronics

IS - 4

M1 - 2413406

ER -

Tip-enhanced second harmonic generation from a single NaNbO₃ nanocrystal

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