Dr. Wei Yi Tsai Profile

Dr. Wei Yi Tsai

at National Taiwan Univ.

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 9 September 2019 Presentation

Interfacial second harmonic nonlinearity in resonant nanostructures (Conference Presentation)

Hui-Hsin Hsiao, Wei Yi Tsai, Tsung Lin Chung, Din Ping Tsai

Proceedings Volume 11082, 110820U (2019) https://doi.org/10.1117/12.2528448

KEYWORDS: Second-harmonic generation, Split ring resonators, Harmonic generation, Magnetism, Nanostructures, Electromagnetism, Metals, Plasmonics, Third-harmonic generation, Four wave mixing

Read Abstract +

Plasmonic nanostructures, with their unique ability to localize electromagnetic fields into nanoscale volumes to create the so-called hot spots, have been widely studied for the enhancement of nonlinear conversion. Various nonlinear optical processes such second-harmonic generation (SHG), third-harmonic generation, or four-wave mixing have been observed in different designed configurations. The SHG process is known to be forbidden in centrosymmetric nanostructures. Thanks to the broken centro-symmetry at the metal surface as well as to the high degree of the asymmetric spatial variation of the inducing electromagnetic fields, strong SHG in noble metals is experimentally observed via properly design. In this work, we studied the SHG of vertical and planar split ring resonator (SRR) arrays. Via a unique nanofabrication technique, we are able to accurately control the alignment of nano-structures on top of each other and experimentally realize vertical split ring resonators (VSRRs). As VSRRs allow the coupling of both the incident electric and magnetic field to the excitation of magnetic dipole resonance, the induced strong fields confined within two vertical prongs are beneficial for the SHG enhancement. In addition, a better field confinement is achieved for vertical configurations since the localized fields in the planar SRR gaps are inevitably leaked to the underlying substrate. The nonlinear optical measurements showed a 2.6-fold enhancement of SHG nonlinearity for VSRR metasurface compared to their planar counterparts. Through the analysis of multipole decomposition, we found that except for electric dipole, the dominant mode for VSRRs is electric quadrupolar resonance, while that for planar SRRs is magnetic dipole. This work paves the way in increasing the nonlinear transition quantum efficiency and provides a new insight in designing novel nonlinear sources.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years