TY - JOUR
T1 - Characteristics of optical emission during laser-induced damage events of fused silica
AU - Shen, Chao
AU - Zhao, Nanjing
AU - Pribosek, Jaka
AU - Ma, Mingjun
AU - Fang, Li
AU - Huang, Xingjiu
AU - Zhang, Yujun
PY - 2019
Y1 - 2019
N2 - Spontaneous optical emission properties of laser-produced plasma during laser damage events at input and exit surfaces of fused silica were retrieved and compared. We show that plasma at the input surface is much larger in size and exhibits significantly higher electron number density and excitation temperature, even when smaller laser energy was used. This effect was attributed to the stronger laser–plasma coupling at the input surface. In addition, a strong continuum background containing three peaks at 1.3 eV, 1.9 eV, and 2.2 eV was observed at the exit surface, and possible origins for this effect are also discussed.
AB - Spontaneous optical emission properties of laser-produced plasma during laser damage events at input and exit surfaces of fused silica were retrieved and compared. We show that plasma at the input surface is much larger in size and exhibits significantly higher electron number density and excitation temperature, even when smaller laser energy was used. This effect was attributed to the stronger laser–plasma coupling at the input surface. In addition, a strong continuum background containing three peaks at 1.3 eV, 1.9 eV, and 2.2 eV was observed at the exit surface, and possible origins for this effect are also discussed.
U2 - 10.3788/COL201917.123002
DO - 10.3788/COL201917.123002
M3 - Article
SN - 1671-7694
VL - 17
JO - Chinese Optics letters
JF - Chinese Optics letters
IS - 12
ER -