Results 21 to 30 of about 4,177,848 (171)

Improvement of Laser Beam Fusion Cutting of Mild and Stainless Steel Due to Longitudinal, Linear Beam Oscillation

open access: yesApplied Sciences, 2020
The latest research on laser beam fusion cutting (LBFC) with static beam shaping have shown a limitation in the quality of cut parts for thick steel plates (> 6 mm) when using solid state lasers.
Cindy Goppold   +4 more
doaj   +1 more source

Free vibration of a three-layered sandwich beam using the dynamic stiffness method and experiment [PDF]

open access: yes, 2007
In this paper, an accurate dynamic stiffness model for a three-layered sandwich beam of unequal thicknesses is developed and subsequently used to investigate its free vibration characteristics.
Morishima, R.   +4 more
core   +1 more source

Stochastic tandem microlens arrays for beam homogenization

open access: yes, 2022
Paper 70620QFly's eye condensers are commonly used for the beam shaping of an arbitrary input intensity distribution into a top hat. The setup usually consists of a Fourier lens and two identical regular microlens arrays - often referred to as tandem ...
Radtke, D.   +4 more
core   +1 more source

Dynamic ultraviolet harmonic beam pattern control by programmable spatial wavefront modulation of near-infrared fundamental beam

open access: yesNanophotonics, 2023
The ultraviolet (UV) wavelength regime is attracting increasing attention because of its growing demand in semiconductor lithography, spectroscopy, and imaging applications owing to its high spatial resolution and high photon energy.
Won Seungjai   +5 more
doaj   +1 more source

Flexible assembly module for beam-shaping product families based on support structures

open access: yes, 2022
Paper 97270WDepending on the application, high-power diode lasers (HPDL) have individual requirements on their beam-shaping as well as their mechanical fixation.
Brecher, Christian   +7 more
core   +1 more source

Engineering of automated assembly of beam-shaping optics

open access: yes, 2022
Paper 89601O, 10 S.Beam-shaping is essential for any kind of laser application. Assembly technologies for beam-shaping subassemblies are subject to intense research and development activities and their technical feasibility has been proven in recent ...
Brecher, Christian   +3 more
core   +1 more source

Consideration on the use of design freedoms for resonator originated beam shaping

open access: yes, 2022
S.69-73A general resonator concept is discussed offering the flexibility of decoupling the mode shape inside and the laser beam outside of the laser resonator. Two examples for the use of the resulting design freedoms for optimization of the laser system
Zeitner, U.D., Wyrowski, F.
core   +1 more source

Holographic Display System to Suppress Speckle Noise Based on Beam Shaping

open access: yesPhotonics, 2021
In this paper, a holographic system to suppress the speckle noise is proposed. Two spatial light modulators (SLMs) are used in the system, one of which is used for beam shaping, and the other is used for reproducing the image.
Di Wang   +3 more
doaj   +1 more source

Wavefront Control of Millimeter Waves With a VO2-Based Reconfigurable Meta-Reflectarray

open access: yesIEEE Access, 2023
In this paper, a novel architecture of a reconfigurable metasurface is proposed and numerically assessed for wavefront control in wireless systems working in the millimeter-wave range.
Mohammad Ali Shameli   +4 more
doaj   +1 more source

Simulation of superresolution holography for optical tweezers [PDF]

open access: yes, 2008
Optical tweezers manipulate microscopic particles using foci of light beams. Their performance is therefore limited by diffraction. Using computer simulations of a model system, we investigate the application of superresolution holography for two ...
Thomson, L.C.   +14 more
core   +1 more source

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