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

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.

Time-resolved dynamics of 355-nm laser-irradiated surface damage on fused silica

2007 ◽  
Author(s):  
Shizhen Xu ◽  
Xiaodong Yuan ◽  
Wanguo Zheng ◽  
Xiaotao Zu ◽  
Haibin Lv ◽  
...  
Keyword(s):  
Surface Damage ◽  
Fused Silica ◽  
Time Resolved

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 Quantitative assessment of nonlinearly absorbed energy in fused silica via time-resolved digital holography

2019 ◽  
Vol 27 (5) ◽  
pp. 7699 ◽  
Author(s):  
Balys Momgaudis ◽  
Viaceslav Kudriasov ◽  
Mikas Vengris ◽  
Andrius Melninkaitis
Keyword(s):  
Quantitative Assessment ◽  
Digital Holography ◽  
Fused Silica ◽  
Absorbed Energy ◽  
Time Resolved
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