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.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Enhancing second-harmonic generation using dipolar-parity modes in non-planar plasmonic nanocavities

Feng Wang, Manoj Manjare, Robert Lemasters, Chentao Li, and Hayk Harutyunyan
Opt. Lett. 44(11) 2787-2790 (2019)

Fano-resonance-based mode-matching hybrid metasurface for enhanced second-harmonic generation

Zhi Li, Wenwei Liu, Zhancheng Li, Hua Cheng, Shuqi Chen, and Jianguo Tian
Opt. Lett. 42(16) 3117-3120 (2017)

Second-harmonic-generation enhancement in cavity resonator integrated grating filters

François Renaud, Antoine Monmayrant, Stéphane Calvez, Olivier Gauthier-Lafaye, Anne-Laure Fehrembach, and Evgeny Popov
Opt. Lett. 44(21) 5198-5201 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics