Abstract

There is an active demand to develop efficient nanoscale nonlinear sources for applications in photonic circuitry, quantum optics, and biosensing. To this end, plasmonic systems have been utilized to boost the nonlinear signal generation; however, high efficiencies of frequency conversion for realistic applications remain a challenge. Metal-insulator-metal (MIM) nanocavities are good candidates for strongly concentrating the fields at the nanoscale to enhance the optical nonlinearities; however, they typically suffer from the requirement to have a quadrupolar resonance at the emission wavelength. Here we introduce non-planar MIM nanocavities with a nonlinear spacer that can strongly enhance the second-harmonic generation (SHG), despite having fundamental and emission modes of the same parity. Our experimental and numerical results indicate that the enhancement is due to the non-planar design of the cavities and the bulk nonlinearity of the spacer layer.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
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, and Jianlin Zhao
Opt. Lett. 44(15) 3813-3816 (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)

Highly efficient second-harmonic generation of a reflective waveguide-coupled photonic nanocavity

Heungjoon Kim, Dongyeon Daniel Kang, and Bong-Shik Song
Opt. Lett. 44(7) 1837-1840 (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 (5)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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 (3)

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