Open AccessMeasurement of temperature gradients during Er:YAG laser irradiation of poly(vinyl alcohol)
Author(s) -
Chiara Chillè,
J. Agresti,
D Ciofini,
A. A. Mencaglia,
Iacopo Osticioli,
Salvatore Siano
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2204/1/012071
Subject(s) - vinyl alcohol , materials science , irradiation , laser , detector , optoelectronics , optics , composite material , physics , nuclear physics , polymer
In this work the interaction of a pulsed Er:YAG (2940 nm) laser beam with mock-ups of poly(vinyl alcohol) (PVOH) has been investigated. Online time resolved temperature peaks induced by single-pulse laser irradiations were measured for the first time through the development of a dedicated setup based on a fast IR detector. Tests were performed using fluences ranging between 1.1-2.8 J/cm 2 and pulse durations of 160-430μs. A multiple heterojunction IR photovoltaic detector with bandwidth 2-12 μm and risetime <7 ns was used to study the surface temperature transient upon Er:YAG laser irradiation of PVOH. Tests and thermal modelling allowed to verify effectiveness and reliability of the novel sensor developed.