Results 21 to 30 of about 48,387 (242)

Optimisation of distributed feedback laser biosensors [PDF]

open access: yes, 2007
A new integrated optical sensor chip is proposed, based on a modified distributed- feedback (DFB) semiconductor laser. The semiconductor layers of different refractive indices that comprise a laser form the basis of a waveguide sensor, where changes in ...
Coote, J, Reddy, Subrayal M, Sweeney, SJ
core   +1 more source

Research Progress on Laser Cladding Amorphous Coatings on Metallic Substrates

open access: yesCailiao gongcheng, 2017
The microstructure and property of amorphous alloy as well as the limitations of the traditional manufacturing methods for the bulk amorphous alloy were briefly introduced in this paper.Combined with characteristics of the laser cladding technique,the ...
CHEN Ming-hui   +2 more
doaj   +1 more source

Study on laser cladding parameters of In625 nickel-based alloy powders

open access: yesFenmo yejin jishu, 2021
To determine the suitable process parameters of cladding the In625 nickel-based alloyed powders on the ZG06Cr13Ni4Mo stainless steel plates, a series tests for the laser cladding parameters were carried out by the response surface analysis, and the ...
LI Yan-peng, WEN Hai-jun
doaj   +1 more source

Optical guiding in meter-scale plasma waveguides

open access: yes, 2020
We demonstrate a new highly tunable technique for generating meter-scale low density plasma waveguides. Such guides can enable electron acceleration to tens of GeV in a single stage.
Feder, L.   +4 more
core   +1 more source

Wavelength-swept Tm-doped fiber laser operating in the two-micron wavelength band [PDF]

open access: yes, 2014
A wavelength-swept thulium-doped silica fiber laser using an intracavity rotating slotted-disk wavelength scanning filter in combination with an intracavity solid etalon for passive control of temporal and spectral profiles is reported. The laser yielded
C. S. Chenug   +19 more
core   +1 more source

Stable cladding of high reflectivity pure copper on the aluminum alloy substrate by an infrared-blue hybrid laser

open access: yesAdditive Manufacturing Letters, 2022
A coaxial infrared-blue hybrid laser system was adopted in the cladding of high reflectivity pure copper on an AlSi7Mg alloy substrate, and the cladding stability, molten pool size and microstructure of the cladded samples by three types of laser sources
Huihui Yang   +10 more
doaj   +1 more source

Ultrafast laser inscription: perspectives on future integrated applications [PDF]

open access: yes, 2014
This paper reviews the recent advancements achieved using ultrafast laser inscription (ULI) that highlight the cross-disciplinary potential of the technology.
Ams M.   +13 more
core   +1 more source

Single-Mode Fiber Microlens with Controllable Spot Size [PDF]

open access: yes, 1991
A novel method for fabricating microlenses on tapered single-mode fibers is shown to be able to control the lens spot size. The fiber cladding is first symmetrically tapered by etching it with an evaporating ammonium bifluoride solution.
Barnard, Chris W., Lit, John W.Y.
core   +2 more sources

Laser cladding

open access: yes, 1983
Imperial Users ...
Powell, John, Powell, John
openaire   +3 more sources

Recent advances in machine learning for defects detection and prediction in laser cladding process

open access: yesNext Materials
As a fundamental component of artificial intelligence, machine learning has gained considerable prominence within the domain of laser cladding in recent years.
X.C. Ji   +9 more
doaj   +1 more source

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