scholarly journals Imaging system to measure kinetics of material cluster ejection during exit-surface damage initiation and growth in fused silica

2009 ◽  
Author(s):  
Rajesh N. Raman ◽  
Raluca A. Negres ◽  
Stavros G. Demos
Keyword(s):  
Imaging System ◽  
Surface Damage ◽  
Fused Silica ◽  
Damage Initiation ◽  
Exit Surface ◽  
Kinetics Of

Fracture of fused silica with 351 nm laser-generated surface cracks

1999 ◽  
Vol 14 (2) ◽  
pp. 597-605 ◽  
Author(s):  
F. Dahmani ◽  
J. C. Lambropoulos ◽  
A. W. Schmid ◽  
S. Papernov ◽  
S. J. Burns
Keyword(s):  
Crack Depth ◽  
Damage Threshold ◽  
Surface Damage ◽  
Laser Pulses ◽  
Fused Silica ◽  
Material Strength ◽  
Failure Strength ◽  
Exit Surface ◽  
Four Point Bending ◽  
Underlying Basis

Laser-induced-surface-flaw experiments on fused silica at 351 nm and 500 ps pulse duration are reported here. Specimens with surface flaws produced at a measured exit-surface damage threshold fluence of Fexit/th = 10 J/cm2 were irradiated at a constant fluence of FL = 1.8 × Fexit/th by different numbers of laser pulses, N = 110 to 520. Micrograph observations show that (i) the produced cracks have a semielliptical shape and (ii) the material strength predictions based on the radial crack depth (normal to the surface) instead of the crack surface length (parallel to the surface) are in good agreement with measured strengths obtained using a four-point bending fixture. The underlying basis of conventional crack analysis is first examined critically and is argued to be deficient in the way the failure strength for the cracks is related to the characteristic parameters of crack geometry. In general, it is necessary to incorporate a residual term into the failure strength formulation. The crack depth and the failure strength are found to increase and decrease with the number of laser pulses, respectively.

Study of the effects of stress wave behavior in laser-induced exit-surface damage of fused silica using time-resolved multi-polariscopic imaging

2021 ◽  
Vol 33 (2) ◽  
pp. 022018
Author(s):  
Lingxi Liang ◽  
Chengyu Zhu ◽  
Hang Yuan ◽  
Luoxian Zhou ◽  
Yuxin Li ◽  
...  
Keyword(s):  
Stress Wave ◽  
Surface Damage ◽  
Fused Silica ◽  
Time Resolved ◽  
Exit Surface ◽  
Effects Of Stress

CO 2 -laser polishing for reductoin of 351-nm surface damage initiation in fused silica

2002 ◽  
Author(s):  
Raymond M. Brusasco ◽  
Bernie M. Penetrante ◽  
Jim A. Butler ◽  
Stephen M. Maricle ◽  
John Peterson
Keyword(s):  
Surface Damage ◽  
Fused Silica ◽  
Laser Polishing ◽  
Damage Initiation

Development of large area input “shadowers” with intricate geometries for growth-suppression of exit surface damage on fused silica

2021 ◽  
Author(s):  
Eyal Feigenbaum ◽  
Isaac L. Bass ◽  
James L. Vickers ◽  
Gabe Guss ◽  
Christopher W. Carr
Keyword(s):  
Surface Damage ◽  
Growth Suppression ◽  
Fused Silica ◽  
Large Area ◽  
Exit Surface

scholarly journals Effect of Rogue Particles on the Sub-Surface Damage of Fused Silica during Grinding/Polishing

2006 ◽  
Author(s):  
Tayyab Suratwala ◽  
R. Steele ◽  
M. D. Feit ◽  
L. Wong ◽  
P. Miller ◽  
...  
Keyword(s):  
Surface Damage ◽  
Fused Silica

Influence of vacuum on nanosecond laser-induced surface damage morphology in fused silica at 1064 nm

2016 ◽  
Vol 362 ◽  
pp. 290-296 ◽  
Author(s):  
R. Diaz ◽  
M. Chambonneau ◽  
P. Grua ◽  
J.-L. Rullier ◽  
J.-Y. Natoli ◽  
...  
Keyword(s):  
Surface Damage ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Damage Morphology
Sign in / Sign up

Export Citation Format

Share Document