Nonlinear optical properties of quantum sized gold clusters

Guda Ramakrishna; Oleg Varnavski; Junhyung Kim; Dongil Lee; Theodore Goodson

doi:10.1117/12.798260

2 September 2008 Nonlinear optical properties of quantum sized gold clusters

Guda Ramakrishna, Oleg Varnavski, Junhyung Kim, Dongil Lee, Theodore Goodson

Proceedings Volume 7049, Linear and Nonlinear Optics of Organic Materials VIII; 70490L (2008) https://doi.org/10.1117/12.798260
Event: Photonic Devices + Applications, 2008, San Diego, California, United States

Abstract

Gold clusters with the sizes close to the Fermi wavelength of electron shows interesting quantum size effects. Linear and nonlinear optical properties show dramatic trends when the sizes of clusters are in the range of quantum confinement. We have investigated the size dependence of the non-linear optical property of two-photon absorption (TPA) cross-sections of the gold clusters. Absolute TPA cross-sections are measured by a combination of one and two-photon excited fluorescence upconversion measurements. Large cross-sections and abrupt changes in the trend of cross-sections are observed in the size-dependence when size is reduced from nanoparticles to cluster. The results can be attributed to the appearance of quantum confinement in these monolayer protected gold clusters.

Citation Download Citation

Guda Ramakrishna, Oleg Varnavski, Junhyung Kim, Dongil Lee, and Theodore Goodson "Nonlinear optical properties of quantum sized gold clusters", Proc. SPIE 7049, Linear and Nonlinear Optics of Organic Materials VIII, 70490L (2 September 2008); https://doi.org/10.1117/12.798260

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