Optimization study on optical system to homogenize powerful laser beam

2006 ◽  
Author(s):  
Chongguang Li ◽  
Zhengrong Wang ◽  
Junchang Li
Keyword(s):  
Laser Beam ◽  
Optical System ◽  
Powerful Laser ◽  
Optimization Study

scholarly journals Calculation and analysis of the laser beam field distribution formed by a real optical system

2018 ◽  
Vol 1096 ◽  
pp. 012120 ◽  
Author(s):  
M L Galkin ◽  
P A Nosov ◽  
M S Kovalev ◽  
N M Verenikina
Keyword(s):  
Laser Beam ◽  
Field Distribution ◽  
Optical System

Adaptive optical system for correction of laser beam going through turbulent atmosphere

2020 ◽  
Author(s):  
Vadim Belousov ◽  
Ilya Galaktionov ◽  
Alexis Kudryashov ◽  
Alexander Nikitin ◽  
Olga Otrubyannikova ◽  
...  
Keyword(s):  
Laser Beam ◽  
Optical System ◽  
Turbulent Atmosphere ◽  
Adaptive Optical System

Diffraction ring pattern at the focal plane of a spherical lens – axicon doublet

1976 ◽  
Vol 54 (17) ◽  
pp. 1774-1780 ◽  
Author(s):  
Pierre-André Bélanger ◽  
Marc Rioux
Keyword(s):  
Plane Wave ◽  
Laser Beam ◽  
Optical System ◽  
Focal Plane ◽  
Focal Length ◽  
Spherical Lens ◽  
Diffraction Ring ◽  
Fresnel Integral ◽  
Drill Holes

A spherical lens and an axicon are combined to form an optical system producing a ring-shaped focalization pattern. The diameter of the ring in the focal plane depends on the angle of the axicon, on its dielectric index, and on the focal length of the spherical lens. The diffractional analysis of the lens–axicon combination, when illuminated by a plane wave, is presented. In particular, we show that, when the aperture is large, the Kirchhoff–Fresnel integral can be reduced to a known function. A close examination of the function reveals that the diffractional width of the ring is equal to approximately twice the width of the Airy pattern of the lens alone. This type of focalization is well suited for a system where a laser beam is used to drill holes.

Simple optical system for manufacturing point diffraction interferometer plates in titanium films using a low intensity CW laser beam

2014 ◽  
Vol 21 (6) ◽  
pp. 787-790
Author(s):  
Juan C. Aguilar ◽  
J. Félix Aguilar ◽  
L. R. Berriel-Valdos
Keyword(s):  
Laser Beam ◽  
Optical System ◽  
Low Intensity ◽  
Cw Laser

Theoretical Analysis and Basic Experiments for the 3D Displacement Measurement Using Ring-Shaped Laser Beam

2005 ◽  
Vol 295-296 ◽  
pp. 295-300
Author(s):  
S. Usuki ◽  
Kazuyuki Enami ◽  
M. Hiraki ◽  
S. Takahashi ◽  
Kiyoshi Takamasu
Keyword(s):  
Theoretical Analysis ◽  
Laser Beam ◽  
Optical System ◽  
High Sensitivity ◽  
Displacement Measurement ◽  
Contact Method ◽  
New Ideas ◽  
3D Positioning ◽  
The One ◽  
Basic Experiments

For flexible 3D positioning of a complex 3D mechanism, it is needed to measure 3D displacement of the end-effecter of the mechanism in high precision and by non-contact method. It was common to use plural sensors or scales together to measure the 3D displacement. However, it is difficult to calibrate the sensitivities of the plural sensors or scales. A novel 3D displacement measurement is proposed using an optical system in which lens focuses are collected at the center of the sphere, which has been used for the radius measurement of the sphere. Instead of facing in the XY direction that has high sensitivity, new ideas are necessary for the measurement in the Z direction of the optics where focuses are collected at the center of the sphere. The displacement in the XY direction and the one in the Z direction can be measured at the same time by using a ring-shaped laser beam instead of a simple ray.

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