Seminar by Dr Samir K Mondal 'Optical Fiber Nanoantenna: Nano-Photonics to Optical Tweezers'

Date

Thursday, September 13, 2018 - 15:00 to 16:00

Location

B700, Level B, Lab 3

Description

Speaker:

Samir K Mondal, Principal Scientist, CSIR-Central Scientific Instruments Organisation, Chandigarh, India

Abstract:

Optical antenna is a key element manipulating light into ultrasmall, nanometer-scale volume.  It is becoming indispensable in nano-photonics research, but difficulties lie in making a simple and efficient optical antenna. A unique method is introduced for preparation of an efficient optical fiber nanoantenna guided by simple rules of physics. The antenna shows interesting properties both in near-field and far field optics, which make it very promising in the field of interdisciplinary nano-photonics research. Few examples could be study of near-field scanning optical microscopy, tip enhanced Raman spectroscopy (TERS), metamaterial, surface plasmon, optical tweezers and sensor etc.  As a proof of the concept, couple experiments such as nano-optical tweezers, TERS, trapping and tweezing have been tested with interesting results.  There are also indications how the salient features of the antenna can further be used in other applications.

All-OIST Category: 

Intra-Group Category


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