Results 31 to 40 of about 1,935,041 (297)
Optimisation of distributed feedback laser biosensors [PDF]
, 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
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Wavelength-swept Tm-doped fiber laser operating in the two-micron wavelength band [PDF]
, 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
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Coatings, 2022 Nowadays, high-entropy alloys (HEAs) have become a hot research topic in the field of coating materials. However, HEAs have a large wide range of compositional systems, and the differences in their composition inevitably lead to the significant ...
Kefeng Lu +7 more
semanticscholar +1 more source
Research Progress on Laser Cladding Amorphous Coatings on Metallic Substrates
Cailiao 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
Fenmo 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
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Optical guiding in meter-scale plasma waveguides
, 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
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Compensation for Uneven Surfaces When Building Laser Deposited Structures [PDF]
, 2004 Direct Laser Deposition (DLD) is a blown-powder laser deposition process that can be used to quickly produce, modify or repair fully-dense metallic parts by a layered manufacturing method. However, uneven substrate surfaces often cause variation in the
Fearon, E., Watkins, K. G.
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Single-Mode Fiber Microlens with Controllable Spot Size [PDF]
, 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.
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Additive 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
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Materials, 2022 In this study, ultra-high-speed laser cladding (UHSLC) and traditional low-speed laser cladding (LSLC) were employed to prepare high-quality Inconel625 coatings on 27SiMn substrates.
Yuhang Ding +4 more
semanticscholar +1 more source