Enhanced second-harmonic generation assisted by breathing mode in a multi-resonant plasmonic trimer

Fajun Xiao, Shiyin Cao, Wuyun Shang, Weiren Zhu, Lei Han, Ting Mei, Malin Premaratne, Jianlin Zhao

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Boosting the nonlinear conversion rate in nanoscale is pivotal for practical applications such as highly sensitive biosensors, extreme ultra-violate light sources, and frequency combs. Here, we theoretically study the enhancement of second-harmonic generation (SHG) in a plasmonic trimer assisted by breathing modes. The geometry of the trimer is fine-tuned to produce strong plasmonic resonances at both the fundamental and SH wavelengths to boost SHG intensity. Moreover, it is found that breathing modes show remarkable ability to augment SHG by increasing the enhancement area. In particular, these breathing modes ensure a substantial spatial mode overlap at the fundamental and SH wavelengths, resulting in further promotion of the SHG conversation rate. We envision that our findings could enable applications in nanoscale frequency converters with high efficiency.

Original languageEnglish
Pages (from-to)3813-3816
Number of pages4
JournalOptics Letters
Volume44
Issue number15
DOIs
Publication statusPublished - 1 Aug 2019

Cite this

Xiao, F., Cao, S., Shang, W., Zhu, W., Han, L., Mei, T., ... Zhao, J. (2019). Enhanced second-harmonic generation assisted by breathing mode in a multi-resonant plasmonic trimer. Optics Letters, 44(15), 3813-3816. https://doi.org/10.1364/OL.44.003813
Xiao, Fajun ; Cao, Shiyin ; Shang, Wuyun ; Zhu, Weiren ; Han, Lei ; Mei, Ting ; Premaratne, Malin ; Zhao, Jianlin. / Enhanced second-harmonic generation assisted by breathing mode in a multi-resonant plasmonic trimer. In: Optics Letters. 2019 ; Vol. 44, No. 15. pp. 3813-3816.
@article{2111abd398f24f3d83535540eb208549,
title = "Enhanced second-harmonic generation assisted by breathing mode in a multi-resonant plasmonic trimer",
abstract = "Boosting the nonlinear conversion rate in nanoscale is pivotal for practical applications such as highly sensitive biosensors, extreme ultra-violate light sources, and frequency combs. Here, we theoretically study the enhancement of second-harmonic generation (SHG) in a plasmonic trimer assisted by breathing modes. The geometry of the trimer is fine-tuned to produce strong plasmonic resonances at both the fundamental and SH wavelengths to boost SHG intensity. Moreover, it is found that breathing modes show remarkable ability to augment SHG by increasing the enhancement area. In particular, these breathing modes ensure a substantial spatial mode overlap at the fundamental and SH wavelengths, resulting in further promotion of the SHG conversation rate. We envision that our findings could enable applications in nanoscale frequency converters with high efficiency.",
author = "Fajun Xiao and Shiyin Cao and Wuyun Shang and Weiren Zhu and Lei Han and Ting Mei and Malin Premaratne and Jianlin Zhao",
year = "2019",
month = "8",
day = "1",
doi = "10.1364/OL.44.003813",
language = "English",
volume = "44",
pages = "3813--3816",
journal = "Optics Letters",
issn = "0146-9592",
publisher = "Optical Society of America (OSA)",
number = "15",

}

Enhanced second-harmonic generation assisted by breathing mode in a multi-resonant plasmonic trimer. / Xiao, Fajun; Cao, Shiyin; Shang, Wuyun; Zhu, Weiren; Han, Lei; Mei, Ting; Premaratne, Malin; Zhao, Jianlin.

In: Optics Letters, Vol. 44, No. 15, 01.08.2019, p. 3813-3816.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Enhanced second-harmonic generation assisted by breathing mode in a multi-resonant plasmonic trimer

AU - Xiao, Fajun

AU - Cao, Shiyin

AU - Shang, Wuyun

AU - Zhu, Weiren

AU - Han, Lei

AU - Mei, Ting

AU - Premaratne, Malin

AU - Zhao, Jianlin

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Boosting the nonlinear conversion rate in nanoscale is pivotal for practical applications such as highly sensitive biosensors, extreme ultra-violate light sources, and frequency combs. Here, we theoretically study the enhancement of second-harmonic generation (SHG) in a plasmonic trimer assisted by breathing modes. The geometry of the trimer is fine-tuned to produce strong plasmonic resonances at both the fundamental and SH wavelengths to boost SHG intensity. Moreover, it is found that breathing modes show remarkable ability to augment SHG by increasing the enhancement area. In particular, these breathing modes ensure a substantial spatial mode overlap at the fundamental and SH wavelengths, resulting in further promotion of the SHG conversation rate. We envision that our findings could enable applications in nanoscale frequency converters with high efficiency.

AB - Boosting the nonlinear conversion rate in nanoscale is pivotal for practical applications such as highly sensitive biosensors, extreme ultra-violate light sources, and frequency combs. Here, we theoretically study the enhancement of second-harmonic generation (SHG) in a plasmonic trimer assisted by breathing modes. The geometry of the trimer is fine-tuned to produce strong plasmonic resonances at both the fundamental and SH wavelengths to boost SHG intensity. Moreover, it is found that breathing modes show remarkable ability to augment SHG by increasing the enhancement area. In particular, these breathing modes ensure a substantial spatial mode overlap at the fundamental and SH wavelengths, resulting in further promotion of the SHG conversation rate. We envision that our findings could enable applications in nanoscale frequency converters with high efficiency.

UR - http://www.scopus.com/inward/record.url?scp=85070882915&partnerID=8YFLogxK

U2 - 10.1364/OL.44.003813

DO - 10.1364/OL.44.003813

M3 - Article

VL - 44

SP - 3813

EP - 3816

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 15

ER -