Open AccessContrasted fatigue behavior of laser-induced damage mechanisms in single layer ZrO<i/> 2 optical coating
Author(s) -
Linas Smalakys,
Balys Momgaudis,
Robertas Grigutis,
Simonas Kičas,
Andrius Melninkaitis
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.026088
Subject(s) - materials science , laser , femtosecond , optics , coating , composite material , physics
The decrease of laser-induced damage threshold (LIDT) when exposed with high number of laser pulses is a well-known phenomenon in dielectrics. In the femtosecond regime this fatigue is usually attributed to the incubation of laser-induced lattice defects. In this work, a computational model is used to combine the data from time-resolved digital holographic microscopy measurements together with results of S-on-1 laser-induced damage threshold test in order to investigate fatigue of ZrO 2 single layer coating. Two distinct damage modes were identified and shown to follow different fatigue behaviors: formation of catastrophic damage is highly nonlinear in time, while incubation of color-change mode appears to be linear in time.