Paper 13369-104
Paper 13369-104
Development of silicon nitride phase shifted Bragg grating cantilever for AFM-IR
On demand | Presented live 29 January 2025 
Abstract
To investigate nanoscale dynamics in materials, Atomic Force Microscopy Infrared Spectroscopy (AFM-IR) systems require fast and small cantilevers. The current interferometric readout method introduces excessive noise when the dimensions of the cantilever is smaller than the laser beam spot size. To address this challenge, we propose a novel cantilever design with an embedded Phase-Shifted Bragg Grating (PSBG). Optimized using Lumerical, the PSBG is designed to operate near 1550 nm. Experimental characterization of the PSBGs on both the cantilevers under self-deflection and the bulk substrate revealed a wavelength red shift of approximately 3 nm.
Presenter
Savda Sam
Munster Technological University (Ireland), Technische Universität Wien (Austria), Tyndall National Institute (Ireland)
Savda obtained her Bachelor’s degree in Electrical and Electronic Engineering from Institute of Technology of Cambodia (ITC). She worked for three years as assistant lecturer at ITC before moving to Italy to pursue her Master’s degree in Electronic Engineering (Photonics curriculum) at University of Pavia. She wrote her Master thesis on “Realization of an all Fibre Interferometer for Time-Energy Quantum Entanglement Experiment”. She worked as Marie Curie Early Stage Researcher on OPTAPHI Ph.D. project: Intra-cavity PTS with optical feedback for isotopic verification of food origin, under supervision of Dr. Liam O’ Faolain and co-supervison of Prof. Bernhard Lendl. Her research interests include Nanophotonics, Nonlinear Optics and Quantum Photonics.
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