Concentric ring damage on the front surface of fused silica induced by a nanosecond laser

Concentric rings are observed on the front surface when a laser pulse focuses on the rear surface of fused silica. The spatial distribution of concentric rings presents a certain regularity, and the width and depth of the ring gradually increase from inside to outside. These features of the concentr...

Full description

Saved in:
Bibliographic Details
Published inOptical materials express Vol. 9; no. 12; p. 4811
Main Authors Zhang, Xiaocheng, Jiang, Yong, Qiu, Rong, Meng, Jiuling, Cao, Jingrui, Zhang, Changjiang, Zhao, Yupeng, Lü, Tao
Format Journal Article
LanguageEnglish
Published Washington Optical Society of America 01.12.2019
Subjects
Fused silica
Laser damage
Lasers
Morphology
Nanosecond pulses
Radiation damage
Silicon dioxide
Spatial distribution
Structural damage
Online AccessGet full text

Cover

More Information
Summary:Concentric rings are observed on the front surface when a laser pulse focuses on the rear surface of fused silica. The spatial distribution of concentric rings presents a certain regularity, and the width and depth of the ring gradually increase from inside to outside. These features of the concentric rings are affected by the laser wavelength and energy. Their formation mechanism is explored by means of combining a time-resolved pump-probe shadowgraph and surface damage morphology. Concentric rings are formed during the irradiation process of one nanosecond pulses, whose radius and depth characteristics may record the relationship between the early stage of laser-induced damage structure and the evolution of early plasma.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.9.004811