Phase shift of plasmons excited by slits in a metal film illuminated by oblique incident TM plane wave

Guangyuan Li; Anshi Xu

doi:10.1117/12.803469

18 November 2008 Phase shift of plasmons excited by slits in a metal film illuminated by oblique incident TM plane wave

Guangyuan Li, Anshi Xu

Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71350T (2008) https://doi.org/10.1117/12.803469
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

The interactions between the optical light and sub-wavelength structures in metal film have sparked great interest on surface plasmon polaritons (SPPs). One effective way to interpret these phenomena is to make use of the phase shift between the SPP excited and the incident wave. Many theoretical and experimental studies have shown that this shift approximate to π is intrinsic at normal incidence. In this paper, the phase shift at oblique incidence is analyzed and used to interpret the transmission effect for the first time to our knowledge. A simplified 2D scattering formulation using vector finite element method is set up. Simulations show the phase shift can be approximate to π over a large range of incidence angles. With this shift, the conditions for the enhanced or suppressed transmission and the corresponding destructive or constructive interference of SPPs at oblique incidence are achieved. The transmission effect for incidence angle not satisfying these conditions, as well as its potential applications is also discussed.

Citation Download Citation

Guangyuan Li and Anshi Xu "Phase shift of plasmons excited by slits in a metal film illuminated by oblique incident TM plane wave", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71350T (18 November 2008); https://doi.org/10.1117/12.803469

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available