Abstract

Plasmon multiple scattering within a disordered metal-dielectric medium allows one to enhance a cubic susceptibility drastically, and thus stimulated Raman scattering (SRS) can occur in highly confined media exposed to the continuous-wave low-powered pump. In this study, a percolated 50 nm titanium oxynitride thin film is used as a disordered nonlinear metalens that meets epsilon-near-zero (ENZ) wavelengths in the visible and near infrared region. We experimentally demonstrate a far-field Raman superlensing effect by showing a subwavelength resolution of $\lambda /6\mathrm{NA}$ at different SRS overtones using multiwalled carbon nanotubes directly dispersed on the metalens.

© 2019 Optical Society of America

Far-field super-focusing by a feedback-based wavefront shaping method

ZhengDong Gao, YanQi Qiao, Lanting Li, and XianFeng Chen
Opt. Lett. 44(4) 1035-1038 (2019)

Imaging nanoscale features with plasmon-coupled leakage radiation far-field superlenses

Charles J. Regan, Robier Rodriguez, Shivkumar C. Gourshetty, Luis Grave de Peralta, and Ayrton A. Bernussi
Opt. Express 20(19) 20827-20834 (2012)

Far-field control of focusing plasmonic waves through disordered nanoholes

Eunsung Seo, Joonmo Ahn, Wonjun Choi, Hakjoon Lee, Young Min Jhon, Sanghoon Lee, and Wonshik Choi
Opt. Lett. 39(20) 5838-5841 (2014)

Simultaneously improve the luminous efficiency and color-rendering index of GaN-based white-light-emitting diodes using metal localized surface plasmon resonance

Rongqiao Wan, Shuo Zhang, Zhiqiang Liu, Xiaoyan Yi, Liancheng Wang, Junxi Wang, Junhui Li, Wenhui Zhu, and Jinmin Li
Opt. Lett. 44(17) 4155-4158 (2019)

Asymmetrical-cavity picosecond Raman laser at the water–air interface

Sergey M. Pershin, Mikhail Ya. Grishin, Vasily N. Lednev, Pavel A. Chizhov, and Valentin A. Orlovich
Opt. Lett. 44(20) 5045-5048 (2019)