Technique for estimating wavefront deformation when monitoring the homogeneity of large blanks of optical glasses

2003 ◽  
Vol 70 (2) ◽  
pp. 120
Author(s):  
V. S. Doladugina
Keyword(s):  
Optical Glasses

Surface and Sub-Surface Integrity of Ultra- Machined BK7 Using Fine and Coarse Grained Diamond Wheels

2007 ◽  
Vol 359-360 ◽  
pp. 234-238 ◽  
Author(s):  
Qing Liang Zhao ◽  
Bo Wang ◽  
Ekkard Brinksmeier ◽  
Otmann Riemer ◽  
Kai Rickens ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Integrity ◽  
High Surface ◽  
Coarse Grained ◽  
Nanometer Scale ◽  
Grinding Wheels ◽  
Fine Grained ◽  
Optical Glasses ◽  
Diamond Grinding ◽  
Surface Damages

This paper aims to evaluate the surface and sub-surface integrity of optical glasses which were correspondingly machined by coarse and fine-grained diamond grinding wheels on Tetraform ‘C’ and Nanotech 500FG. The experimental results show that coarse-grained diamond grinding wheels are capable of ductile grinding of optical glasses with high surface and sub-surface integrity. The surface roughness values are all in nanometer scale and the sub-surface damages are around several micros in depth, which is comparative to those machined by fine-grained diamond wheels.

Adaptive spatio-temporal techniques for smart ultrafast laser processing of optical glasses

2009 ◽  
Author(s):  
Razvan Stoian ◽  
Alexandre Mermillod-Blondin ◽  
Cyril Mauclair ◽  
Guanghua Cheng ◽  
Konstantin Mishchik ◽  
...  
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Optical Glasses ◽  
Spatio Temporal
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