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Application of Spiral Laser Beams for Beam Shaping Problem
2006 International Workshop on Laser and Fiber-Optical Networks Modeling, 2006Spiral beams are paraxial structurally stable rotating wavefields. For any planar curve there are such spiral beams, whose intensity shape is similar to the curve. The usage of Gerchberg?Saxton iterative algorithm and the initial data, based on spiral beam theory, provide an effective way for construction of specific vortical phase elements.
E.G. Abramochkin +2 more
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Beam Shaping Of Powerful Lasers
SPIE Proceedings, 1989Apodized (soft) apertures(AA) of 2-50 mm diameter with the near-Gaussian and the flat top spatial profiles in ultraviolet, visible and infrared regions are presented. They have the high thresholds for intensity damage.
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Diffractive shaping of excimer laser beams
Journal of Modern Optics, 2000Abstract We address the problem of shaping the intensity distribution of a highly directional partially coherent field, such as an excimer laser beam, by means of diffractive optics. Our theoretical analysis is based on modelling the multi-transverse-mode laser beam as a Gaussian Schell-model beam. It is shown numerically that a periodic element, which
J. Turunen +6 more
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Laser Beam Shaping Applications
2017Preface Illuminators for Microlithography, Paul Michaloski Laser Beam Shaping in Array-Type Laser Printing Systems, Andrew F. Kurtz and Daniel D. Haas Practical UV Excimer Laser Image System Illuminators, Jeffrey P. Sercel and Michael von Dadelszen Beam Shaping for Optical Data Storage, Edwin P. Walker and Tom D.
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Hazard analysis on gaussian shaped laser beams
American Industrial Hygiene Association Journal, 1980Laser safety evaluations are usually difficult for those who do not perform these evaluations every day. The author develops formulae for hazard evaluation based on a Gaussian beam shape. These formulae may be applied to a variety of situations even though an electronic calculator usually is required to solve them.
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Dammann Gratings For Laser Beam Shaping
Optical Engineering, 1989Dammann gratings are binary phase gratings that are used to produce a one- or two-dimensional array of equal-intensity light spots. Recently, Dammann gratings have become of interest for their ability to provide the optical power supply to an array of optical logic devices from a single laser source.
J. Jahns +4 more
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Laser beam shaping: properties and applications
2020The field of laser beam shaping advances the study of optics by pushing the limits of structured light and its applications. This thesis aims to exploit classical optical theory using state of the art structuring techniques to introduce two novel demonstrations: (1) high-speed digital micro-mirror device (DMD) light shaping and (2) broadband dual ...
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Laser Beam Shaping with Optical Fibers
1996The spatial intensity profile of a laser beam is of crucial importance for many laser applications. Homogeneous illumination or ablation of a sample by laser radiation requires a “flat top” intensity distribution. As an alternative to complex optical systems the use of optical fibers has been tested for beam shaping of XeCl excimer lasers. By controled
G. Hillrichs +4 more
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Laser beam shaping by double tailoring
SPIE Proceedings, 2005In several previous publications we have outlined how a freeform optical surface can be tailored to achieve a desired irradiance on a reference surface. The shape of the surface is determined by numerically solving a differential equation. This approach has the advantage of being able to accommodate a huge amount of detail, equivalent to several ...
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