TY - JOUR
T1 - Ultraviolet nanosecond laser-induced damage on potassium dihydrogen phosphate crystal surface originated from different defects
AU - Geng, Feng
AU - Liu, Mincai
AU - Zhang, Qinghua
AU - Liu, Zhichao
AU - Xu, Qiao
AU - Li, Yaguo
N1 - Publisher Copyright:
© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).
PY - 2021/3/1
Y1 - 2021/3/1
N2 - Nanosecond UV laser-induced surface damage of potassium dihydrogen phosphate samples was investigated and discussed by means of defect characterization, in situ damage test, as well as pump-probe shadowgraph imaging. Two distinctive types of surface damage induced by different defects have been demonstrated. Surface damage occurring at relative lower fluence (typically below 5 J / cm2 in our experiment) is highly correlated with fluorescent surface defects, which are considered as fractural structures introduced by surface cutting. The other type of surface damage that always occurs at higher fluence (above 8 J / cm2) is confirmed to originate from the bulk damage precursor located near the crystal surface.
AB - Nanosecond UV laser-induced surface damage of potassium dihydrogen phosphate samples was investigated and discussed by means of defect characterization, in situ damage test, as well as pump-probe shadowgraph imaging. Two distinctive types of surface damage induced by different defects have been demonstrated. Surface damage occurring at relative lower fluence (typically below 5 J / cm2 in our experiment) is highly correlated with fluorescent surface defects, which are considered as fractural structures introduced by surface cutting. The other type of surface damage that always occurs at higher fluence (above 8 J / cm2) is confirmed to originate from the bulk damage precursor located near the crystal surface.
KW - defect characterization
KW - laser-induced damage
KW - potassium dihydrogen phosphate crystal
KW - time-resolved shadowgraph
UR - http://www.scopus.com/inward/record.url?scp=85104756591&partnerID=8YFLogxK
U2 - 10.1117/1.OE.60.3.031003
DO - 10.1117/1.OE.60.3.031003
M3 - 文章
AN - SCOPUS:85104756591
SN - 0091-3286
VL - 60
JO - Optical Engineering
JF - Optical Engineering
IS - 3
M1 - 031003
ER -