A comparison of cut path deviation with continuous and pulsed beam modes in diode laser chip-free cutting of glass

2009 ◽  
Author(s):  
Salman Nisar ◽  
Lin Li ◽  
M. A. Sheikh ◽  
Andrew J. Pinkerton
Keyword(s):  
Diode Laser ◽  
Laser Chip ◽  
Cut Path Deviation ◽  
Path Deviation

Comparison of Cut Path Deviation Between CO2 and Diode Lasers in Float-Glass Cutting

2014 ◽  
Vol 35 (2) ◽  
pp. 182-192
Author(s):  
Salman Nisar ◽  
Sohaib Z. Khan ◽  
Muhammad Ali ◽  
Lin Li ◽  
Mohammed A. Sheikh
Keyword(s):  
Diode Lasers ◽  
Float Glass ◽  
Glass Cutting ◽  
Cut Path Deviation ◽  
Path Deviation

Thermal and stress characteristics in diode laser chip-free cutting of glass

2008 ◽  
Author(s):  
Salman Nisar ◽  
Farhan Nazir ◽  
Lin Li ◽  
M. A. Sheikh
Keyword(s):  
Diode Laser ◽  
Laser Chip

High Power and Widely Tunable External Cavity Diode Laser with a Single-Angled-Facet Laser Chip

2010 ◽  
Author(s):  
Kiyofumi Muro ◽  
Yasutaka Shimada ◽  
Ken Kitahara ◽  
Tomohisa Endo ◽  
Yuji Yamagata ◽  
...  
Keyword(s):  
Diode Laser ◽  
High Power ◽  
External Cavity ◽  
External Cavity Diode Laser ◽  
Laser Chip

The Effect of Laser Beam Geometry on Cut Path Deviation in Diode Laser Chip-Free Cutting of Glass

2009 ◽  
Vol 132 (1) ◽  
Author(s):  
Salman Nisar ◽  
M. A. Sheikh ◽  
Lin Li ◽  
Andrew J. Pinkerton ◽  
Shakeel Safdar
Keyword(s):  
Finite Element ◽  
Laser Beam ◽  
Finite Element Modeling ◽  
Thermal Stresses ◽  
Element Modeling ◽  
Beam Geometry ◽  
Trailing Edges ◽  
Controlled Fracture ◽  
Cut Path Deviation ◽  
Path Deviation

In laser cleaving of brittle materials using the controlled fracture technique, thermal stresses are used to induce a single crack and the material is separated along the cutting path by extending the crack. One of the problems in laser cutting of glass with the controlled fracture technique is the cut deviation at the leading and the trailing edges of the glass sheet. This work is about minimizing this deviation through an optimization process, which includes laser beam geometry. It has been established that the thermal stresses generated during laser scanning are strongly dependent upon laser beam geometry. Experimental techniques are used to quantify cut deviation for soda-lime glass sheets under a set of conditions while finite element modeling is used to optimize the process and reduce (or eliminate) cut deviation. The experimental results of the effect of different laser beam geometries on cut path deviation have been presented in this study, along with the finite element modeling of the cutting process to simulate the transient effects of the moving beam and predict thermal fields and stress distribution. These predictions are compared with the experimental data. In comparison to other beam geometries, the triangular-forward beam at the leading edge and triangular-reverse and circular beam geometry at the trailing edge produces lower tensile stresses (σxx) and hence minimizes the cut path deviation. The work also shows that beam divergence inside the glass plays a significant role in changing the cut path deviation at the bottom leading and trailing edges of the glass.

Infrared diode laser jet spectroscopy of the van der Waals complex (N2O)2

1997 ◽  
Vol 91 (4) ◽  
pp. 689-696 ◽  
Author(s):  
HAI-BO QIAN ◽  
WOUTER HERREBOUT ◽  
BRIAN HOWARD
Keyword(s):  
Diode Laser ◽  
Van Der Waals ◽  
Van Der Waals Complex

Indocyanine green-augmented diode laser therapy of telangiectatic and reticular leg veins: a clinical proof-of-concept trial

2012 ◽  
Vol 25 (01) ◽  
Author(s):  
A Klein ◽  
G Shafirstein ◽  
E Kohl ◽  
W Bäumler ◽  
M Landthaler ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Laser Therapy ◽  
Diode Laser ◽  
Proof Of Concept
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