Ultralarge photothermal nonlinear response and super-resolution imaging of nanomaterials

Shi-Wei Chu

doi:10.1117/12.2567469

22 August 2020 Ultralarge photothermal nonlinear response and super-resolution imaging of nanomaterials

Shi-Wei Chu

Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 1146210 (2020) https://doi.org/10.1117/12.2567469
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Recently, meta-optics based on innovative nanostructures has attracted significant attention in scientific community because of their superior properties in local-field enhancement and ultrasmall mode volume. For practical applications such as all-optical switch, optical nonlinearity of metamaterials is indispensable. However, the intrinsic nonlinear responses of most nanomaterials are not adequate. In this invited talk, I will review our recent findings on ultra-large optical nonlinearity in metallic and dielectric nanostructures. With ~100 nm particles, significant nonlinear response on scattering was found, based on resonant heating of the nanostructure as well as strong photothermal effect. The excitation intensity is typically less than 10 mW/m2, which is much smaller than most nonlinear optics requirements, and thus leading to effective nonlinear coefficient n2 that is several orders larger than the bulk counterparts. I will present the applications of such a huge nonlinearity in a single nanostructure toward ultrasmall all-optical switch and label-free super-resolution microscopy.

Conference Presentation

Citation Download Citation

Shi-Wei Chu "Ultralarge photothermal nonlinear response and super-resolution imaging of nanomaterials", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 1146210 (22 August 2020); https://doi.org/10.1117/12.2567469

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Nanomaterials

Nonlinear response

Nanostructures

Nonlinear optics

Super resolution

Switches

Dielectrics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years