Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Experimental setup for laser induced damage of K9 and fused silica. The wavelength of He-Ne laser is nm.To make the adjusting process of beam path easier, the collimated beam at wavelength of 532 nm was used for the optical_system. HR: High reflector, AR: anti reflector, L1 and L2: lens, CCD1 and CCD2: CCD cameras, PC: Personal Computer. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Experiment setup for measuring birefringence with a SC. The linearly polarized light from the He-Ne laser is focused by a lens (L1) onto the K9 glass and fused silica samples. The second lens (L2) is used to diverge the beam on the screen. The polarizer (P1) is oriented perpendicular to the input polarization (P2) for maximum extinction in the absence of the sample and the compensator. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Laser induced damage morphology of K9 glass and fused silica under 1064 nm nanosecond laser radiation. In picture (a) the laser energy density is J/cm2, pulse counts is 15 for K9 glass; In picture (b), the laser energy density is J/cm2, pulse counts is 15 for K9 glass; In picture (c), the laser energy density is 16.1 J/cm2, pulse counts is 22 for fused silica. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Definition of the direction: (a) The direction which parallel to the incident direction of laser is defined as the longitudinal damage direction; (b) The direction, which perpendicular to the incident direction, is defined as the horizontal damage direction. C is a fixed value. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Stresses (in unit of birefringence) around laser-induced cracks in K9 determined through birefringence. The crack of dimensions 2c=4.2 nm and a=2.97 mm, produced by N=15 laser shots at laser energy density of J/cm2. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Residual Stresses (in unit of birefringence) around by N=15 laser shots at laser energy density of J/cm2. The crack of dimensions 2c=3.0 mm and a=1.98 mm, produced cracks in K9 glass determined through birefringence measurements. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Stresses (in unit of birefringence) around a laser-induced crack in fused silica determined through birefringence measurements. The crack of dimensions 2c=2.0 mm and a=1.57 mm, produced by N=22 laser shots at laser energy density of 16.1 J/cm2. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. (a) Theoretical simulation results from inclusion model for a crack of dimensions 2c=4.2 mm. (b) Theoretical simulation results from inclusion model for a crack of dimensions 2c=3.0 mm. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE

Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Theoretical simulation results of fused silica from inclusion model for a crack of dimensions 2c=2.0 mm. Figure Legend: From: Residual stress near cracks of K9 and fused silica under 1064 nm nanosecond laser irradiation Opt. Eng. 2012;51(11): doi: /1.OE