Continuous control of surface-plasmon excitation wavelengths using nanomechanically stretched subwavelength grating

We report a new method for continuously controlling surface-plasmon (SP) excitation wavelengths using a nanomechanically stretched metal subwavelength grating. An aluminum subwavelength grating is integrated with electrostatic comb-drive actuators to expand the metal subwavelength period, which allo...

Full description

Saved in:
Bibliographic Details
Published inApplied physics express Vol. 9; no. 2; pp. 27201 - 27204
Main Authors Honma, Hiroaki, Takahashi, Kazuhiro, Ishida, Makoto, Sawada, Kazuaki
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.02.2016
Online AccessGet full text

Cover

More Information
Summary:We report a new method for continuously controlling surface-plasmon (SP) excitation wavelengths using a nanomechanically stretched metal subwavelength grating. An aluminum subwavelength grating is integrated with electrostatic comb-drive actuators to expand the metal subwavelength period, which allows continuous control of the dependent excitation wavelength. We successfully demonstrated that the excitation wavelength over the 542-668 nm range varies continuously with the square of the applied voltage, which agrees well with the theory of electrostatic actuation. This new modulation method can provide the functions of readjustment and continuous tuning for SP-based devices.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.9.027201