Results 51 to 60 of about 4,177,848 (171)

Evaluation of a novel integrated laser fuze receiving system

open access: yesAdvances in Mechanical Engineering, 2017
Laser receiving system is an important part of laser fuze, but its working quality is very sensitive to severe overloading. As the common buffer isolation methods are difficult to apply in laser fuze receiving system, in this study, a high overload ...
Lin Gan, He Zhang
doaj   +1 more source

A review of liquid crystal spatial light modulators: devices and applications

open access: yesOpto-Electronic Science, 2023
Spatial light modulators, as dynamic flat-panel optical devices, have witnessed rapid development over the past two decades, concomitant with the advancements in micro- and opto-electronic integration technology.
Yiqian Yang, Andrew Forbes, Liangcai Cao
doaj   +1 more source

Shaping characteristics of excavation contours in sequential controlled fracture blasting of rock-anchored beams in Shuangjiangkou underground powerhouse

open access: yesScientific Reports, 2023
Influences of high in-situ stress generally need to be considered when excavating deep underground caverns. The dynamic fracture behaviors of rocks under blast loads were investigated by using the rock-anchored beam excavation in underground powerhouses ...
Yanglong Chen   +6 more
doaj   +1 more source

Cavity shape and beam dynamics design for a linac for pions [PDF]

open access: yesConference Record of the 1991 IEEE Particle Accelerator Conference, 2002
A linac to accelerate pions from 400 to 920 MeV kinetic energy is being designed as an upgrade to the LAMPF accelerator facility at Los Alamos, New Mexico. Calculations for the design of the superconducting cavity shape attempt to reduce the peak surface field needed to achieve a given accelerating gradient, yet ensure sufficient cell-to-cell coupling ...
openaire   +1 more source

Mathematical analysis of dynamic high power laser beam shaping using Galvanometer Scanners or Deformable Mirrors [PDF]

open access: yes
In high power laser material processing technologies, such as laser welding, laser cladding or laser surface treatment, tailoring the spatial intensity profile of the laser beam, popularly known as beam shaping, is used to optimize the processing results
Römer, G.R.B.E.   +2 more
core   +1 more source

Dynamic Modeling and Simulation of a Rotating Single Link Flexible Robotic Manipulator Subject to Quick Stops [PDF]

open access: yes, 2014
Single link robotic manipulators are extensively used in industry and research operations. The main design requirement of such manipulators is to minimize link dynamic deflection and its active end vibrations, and obtain high position accuracy during its
Noroozi, Siamak, Dupac, Mihai
core   +1 more source

Beam shaping system for laser-induced crystal growth

open access: yes, 2023
We report on the development and setup of a beam shaping system for the Laser-Diode-Floating-Zone (LDFZ) crystal growth, a crucible-free technique used for growing high-purity crystals.
Hans-Dieter Hoffmann   +9 more
core   +1 more source

Material dependent influence of ring/spot beam profiles in laser powder bed fusion

open access: yesAdditive Manufacturing Letters
In recent years, the topic of beam shaping for improved laser material processing has rapidly grown influencing metal laser powder bed fusion (PBF-LB/M).
Lova Chechik   +4 more
doaj   +1 more source

Dynamic plasmonic beam shaping by vector beams with arbitrary locally linear polarization states [PDF]

open access: yesApplied Physics Letters, 2014
Vector beams, which have space-variant state of polarization (SOP) comparing with scalar beams with spatially homogeneous SOP, are used to manipulate surface plasmon polarizations (SPPs). We find that the excitation, orientation, and distribution of the focused SPPs excited in a high numerical aperture microscopic configuration highly depend on the ...
Man, Z. (author)   +7 more
openaire   +4 more sources

Minimal-effort planning of active alignment processes for beam-shaping optics

open access: yes, 2022
Art. 93430WIn science and industry, the alignment of beam-shaping optics is usually a manual procedure. Many industrial applications utilizing beam-shaping optical systems require more scalable production solutions and therefore effort has been invested ...
Losch, Daniel   +7 more
core   +1 more source

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