| MS Seminar

Name of the Speaker: MANO BALA SANKAR M (EE18S301)
Guide: Dr. Balaji Srinivasan
Online meeting link: https://meet.google.com/ije-tors-tnh
Date/Time: JULY 27th, 2022, 4:00 PM to 5:00 PM
Title: Devices for Photonic and Quantum Technologies by Femtosecond (fs) LASER Micro-Structuring

Abstract

Femtosecond (fs) laser micromachining is one of the most flexible manufacturing technologies to create micron sized features. Its ability to accurately and reproducibly create structures in a wide range of materials makes it an indispensable technology in a wide array of applications such as micro-cutting of cardiac stents, micro-scribing of silicon/thin film solar cells, micro-lithography of electronic chips, micro scribing/cutting of electrodes in flat panel displays, surface micro texturing of automotive engine parts, microfabrication of MEMS devices. The advantage of femtosecond pulses over the nanosecond (ns) or picosecond (ps) is their ability to deposit energy into a material in a very short time. It will remove or modify it before thermal processes originate. The ultrafast lasers vaporize matter without generating heat ("cold ablation"). The energy deposition process takes place quickly when compared to atomic relaxation procedures.