Field Enhancement in Nanoparticles Due to IR Vortex Beams

Sharma, Sahil and Sinha, Abhisek and Sharma, Vandana and Sharma, Ram gopal (2022) Field Enhancement in Nanoparticles Due to IR Vortex Beams. In: 1st International Conference on Technologies for Smart Green Connected Society 2021, ICTSGS 202, 29 November 2021 through 30 November 2021, Virtual, Online.

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Abstract

In this report we present our study of interaction of light carrying OAM (Orbital Angular Momentum) with nanometric metallic discs. Plasmonic effects are known to give rise to high local field enhancement factors in gold nano-discs [1]. These high intensities near fields have found use in a wide variety of imaging and detection applications [2]. The local field enhancement factor near the surface of the disc was calculated numerically using finite element method using the Comsol package. We report a significant increase in the local field enhancement factor for light beams carrying OAM compared to Gaussian beams which are attributed to localised surface plasmon resonances (LSPR). Such large enhancements in the field can be immensely useful in the field on near field microscopy and electron generation. © The Electrochemical Society

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IITH Creators:

IITH Creators	ORCiD

Item Type:

Conference or Workshop Item (Paper)

Additional Information:

I would like to thank my project supervisor Dr. Vandana Sharma of the Physics Department at IIT Hyderabad. She always guided me whenever I had a question about my project work and steered me in the right direction whenever she thought I needed it. I would also like to thank Abhisek Sinha, currently pursuing Ph.D. at IIT Hyderabad. Without their passionate participation and input, this report could not have been successfully presented.

Uncontrolled Keywords:

light carrying OAM (Orbital Angular Momentum) , nanometric metallic discs, Plasmonic effects, localised surface plasmon resonances (LSPR).

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

18 Jul 2022 13:37

Last Modified:

18 Jul 2022 13:37