Open AccessImage processing method for laser damage probability measurement by single-shot of laser pulse
Author(s) -
Jianping Hu,
Xin Zhou,
LI Shu-gang,
Liu Zhicao,
Feng Pan,
Songlin Chen
Publication year - 2011
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.19.010625
Subject(s) - optics , laser , grating , materials science , image processing , physics , computer science , artificial intelligence , image (mathematics)
An experiment for high efficiency laser-induced damage probability measurement has been implemented using a periodic binary phase grating. With such a grating, a laser beam is transformed into an ensemble array of Gaussian-like spots, which is known as the Fresnel image of the grating. A scientific CCD camera is used to image the laser spot array as well as the damage of the coating sample. The image data is then processed to obtain the peak fluence distribution of the laser spot array based on the calibrated CCD grayscale. By comparing the image of the damaged coating sample with that of the laser spot array, the damage probability of the coating sample can be precisely determined by the use of single-shot of laser pulse.