Photon force analysis for a spherical particle near a substrate illuminated by a tightly focused laser beam

2003 ◽  
Vol 94 (4) ◽  
pp. 2183-2187 ◽  
Author(s):  
Wataru Inami ◽  
Yoshimasa Kawata
Keyword(s):  
Laser Beam ◽  
Spherical Particle ◽  
Force Analysis

Forward Scattering Signature of a Spherical Particle Crossing a Laser Beam out of the Beam Waist

1988 ◽  
Vol 5 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Jean-Philippe Chevaillier ◽  
Jean Fabre ◽  
Patrice Hamelin ◽  
Jean-Loup Lense
Keyword(s):  
Laser Beam ◽  
Spherical Particle ◽  
Beam Waist ◽  
Forward Scattering

Force Analysis, Mechanical Energy and Laser Heating Evaluation of Scratch Tests on Silicon Carbide (4H-SiC) in Micro-Laser Assisted Machining (µ-LAM) Process

2009 ◽  
Author(s):  
Amir R. Shayan ◽  
Huseyin Bogac Poyraz ◽  
Deepak Ravindra ◽  
Muralidhar Ghantasala ◽  
John A. Patten
Keyword(s):  
Laser Beam ◽  
Cutting Forces ◽  
Laser Heating ◽  
Cutting Tool ◽  
Work Piece ◽  
Force Analysis ◽  
Diamond Cutting ◽  
Laser Assisted Machining ◽  
Scratch Tests ◽  
Diamond Cutting Tool

The purpose of applying a laser beam in the micro-laser assisted machining (μ-LAM) process is to preferentially heat and thermally soften the surface layer of the work piece material (4H-SiC) at the interface with a diamond cutting tool. In the μ-LAM process the laser beam (1480 nm and 400 mW) is delivered to the work piece material through a transparent diamond cutting tool. Thus the cutting tool and the laser system are integrated and coupled; in contrast with other LAM processes where the cutting tool and laser are separate and distinct systems. Scratches were made on a 4H-SiC substrate using the μ-LAM process. The characteristics of the scratches, such as depth and width, are principally a function of the cutting tool geometry, applied forces, cutting speed, and laser heating. White light interferometer microscopy and Atomic Force Microscopy (AFM) techniques were used to measure the geometry (depth and width) of the scratches. Force analysis was carried out to evaluate the laser heating effect on the cutting forces and the measured depth of cut. The force analysis included an evaluation of the mechanical work, specific energy, and understanding the effect of laser heating on the cutting process. The scratch tests performed on 4H-SiC with the laser heating showed that there is a greater than 50% reduction in relative calculated hardness values of work piece material, resulting in a significant reduction in cutting forces.

Force analysis of a laser beam incident on a fluid jet

1990 ◽  
Vol 29 (18) ◽  
pp. 2734 ◽  
Author(s):  
Louis A. Gritzo ◽  
Melvyn L. Fernandez ◽  
Edward E. Anderson
Keyword(s):  
Laser Beam ◽  
Force Analysis ◽  
Beam Incident
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