Open AccessTime-resolved imaging of processes associated with exit-surface damage growth in fused silica following exposure to nanosecond laser pulses
Author(s) -
Stavros G. Demos,
Rajesh N. Raman,
Raluca A. Negres
Publication year - 2013
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.21.004875
Subject(s) - materials science , nanosecond , optics , temporal resolution , laser , plasma , image resolution , resolution (logic) , microscopy , deposition (geology) , kinetics , physics , paleontology , quantum mechanics , artificial intelligence , sediment , computer science , biology
We study the dynamics of energy deposition and subsequent material response associated with exit surface damage growth in fused silica using a time resolved microscope system. This system enables acquisition of two transient images per damage event with temporal resolution of 180 ps and spatial resolution on the order of 1 µm. The experimental results address important issues in laser damage growth that include: a) the specific structural features within a damage site where plasma formation initiates; b) the subsequent growth of the plasma regions; c) the formation and expansion of radial and circumferential cracks; d) the kinetics and duration of material ejection; e) the characteristics of the generated shockwave.