Results 21 to 30 of about 3,519,369 (196)
Enhanced Photoacoustic Beam Profiling of Pulsed Lasers
International Journal of Thermophysics, 2013 An improved version of a photoacoustic beam profiler of pulsed lasers is presented. The new model resorts to high-bandwidth condenser microphones to register higher-order, excited acoustic modes, thus enabling more accurate profiling. In addition, Xe was used as a buffer gas since its high atomic weight further reduces the eigenfrequencies. Furthermore,
González, Martín Germán +4 more
openaire +2 more sources
Experimental investigation of hydrodynamics of melt layer during laser cutting of steel [PDF]
, 2011 In laser cutting process, understanding of hydrodynamics of melt layer is significant, because it is an important factor which controls the final quality. In this work, we observed hydrodynamics of melt layer on kerf front in the case of laser cutting of
Remy Fabbro +3 more
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Shaping Beam Profiles Using Plastic Optical Fiber Tapers with Application to Ice Sensors
Sensors, 2020 Using either bulk or fiber optics the profile of laser beams can be altered from Gaussian to top-hat or hollow beams allowing enhanced performance in applications like laser cooling, optical trapping, and fiber sensing.
Kostas Amoiropoulos +3 more
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Development of an adaptive laser beam shaper
, 2022 Paper 1051819, 7 S.The intensity distribution of a laser beam has a high impact on laser processing applications. In many applications, the emitted light of a laser beam source is transformed from a Gaussian intensity distribution into other intensity ...
Pütsch, O. +4 more
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Journal of Advanced Joining ProcessesThe present paper investigates the application of laser beam shaping and laser beam oscillations (wobbling) for laser processing of the crack-prone aluminum alloy 6013, used in automotive and aerospace applications.
Thomas Stoll +3 more
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Compact Beam Homogenizer Module with Laser-Fabricated Lens-Arrays
Applied Sciences, 2021 We report on manufacturing of a compact beam homogenizer module including two lens arrays and an aperture. Lens arrays are fabricated by an all laser-based technology employing a precise femtosecond pulsed laser ablation and a CO2 laser polishing step ...
Simon Schwarz +4 more
doaj +1 more source
Finite element simulation of magnesium alloys laser beam welding [PDF]
, 2010 The authors are grateful to FONDERIE MESSIER (HONSEL group) that provided the as-cast magnesium alloy workpieces. The authors would like also to acknowledge the technical support of Dr.
BESSROUR, Jamel +4 more
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Physical Review Special Topics. Accelerators and Beams, 2007 Accurate measurement of the beam phase space is essential for the next generation of electron accelerators. A scheme for beam optics optimization and beam matrix reconstruction algorithms for the diagnostics section of the beam delivery system of the ...
I. Agapov, G. A. Blair, M. Woodley
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Spatiotemporal shaping of high power laser pulses based on stimulated brillouin scattering
Frontiers in Physics, 2023 We proposed and numerically demonstrated the combination of temporal and spatial shaping of high power nanosecond laser pulses based on stimulated Brillouin scattering (SBS) in this paper.
Xuehua Zhu +9 more
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Impact of the spatial laser distribution on photocathode gun operation
Physical Review Special Topics. Accelerators and Beams, 2012 It is widely believed that a drive laser with uniform temporal and spatial laser profiles is required to generate the lowest emittance beam at the photoinjector.
Feng Zhou +4 more
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