Investigations of laser- and radiation-induced damage towards developing damage-resistant optical materials

  • Jacque Lynn Gabayno Department of Physics, Mapúa University

Abstract

Laser-induced damage inside laser crystals, nonlinear crystals, and surface of optical components (e.g. lenses, mirrors) limits the output of both large-aperture and table-top laser systems. In general, optical damage is precipitated by heating due to intrinsic and localized absorption of free carriers and impurities, respectively. Though it has been experimentally established that damage threshold is laser pulse duration-dependent, crucial information about the morphology and temporal evolution of the damage remains difficult to predict. So we use a statistical method based on a percolation model to reproduce the development of optical damage on the surface of a material, i.e., a 2D system. The model looks at the critical behavior of the damage threshold based on material properties (e.g. thermal conductivity, heat capacity, absorption coefficient) and laser excitation (e.g. pulse duration, fluence). Key conditions that can manifest certain damage morphology and threshold will help elucidate future design of durable and damage-resistant optical materials.

About the Speaker

Jacque Gabayno received her PhD degree in Physics from the University of the Philippines Diliman in 2010. She was briefly involved with the microelectronics industry as a systems developer and engineer (2011-2012) before joining the Department of Physics of the Mapúa Institute of Technology (now Mapúa University) in 2012. She held a postdoctoral position at the Chung Yuan Christian University in Taiwan from 2013 to 2015. She then returned to the Philippines and promoted the establishment of the BS Physics program of Mapúa University. She is also currently working as a research associate at the Institute of Laser Engineering under the Cross-Appointment System for the promotion of Gender Equality and Diversity in Osaka University. Her past and current research interests are related to laser materials, optical inspection systems, magnetic nanoparticles, and modeling radiation-induced damage.

Published
2018-03-10
How to Cite
[1]
J. L. Gabayno. Investigations of laser- and radiation-induced damage towards developing damage-resistant optical materials, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-INV-2D-06 (2018). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2018-INV-2D-06.