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Monday, August 10, 2020 | History

2 edition of Excimer laser induced modifications of optical surfaces found in the catalog.

Excimer laser induced modifications of optical surfaces

S. E. Clark

Excimer laser induced modifications of optical surfaces

by S. E. Clark

  • 109 Want to read
  • 18 Currently reading

Published .
Written in English


Edition Notes

Thesis(Ph.D.) - Loughborough University of Technology 1988.

Statementby S.E. Clark.
ID Numbers
Open LibraryOL20877496M

Laser induced damage in optical materials: proceedings of a symposium sponsored by the American Society for Testing and Materials and by the National Bureau of Standards ASTM special technical publication Proceedings of SPIE--the International Society for Optical . -laser-induced surface modification of iron thin films to obtain corrosion resistance Masayuki Okoshi, Yuta Awaihara, Tsugito Yamashita et al.-Fabrication of superhydrophobic silicone rubber by ArF-excimer-laser-induced microstructuring for repelling water in water Masayuki Okoshi and Wisnu Setyo Pambudi-Crack suppression of silica glass formed.

EXCIMER LASER-INDUCED SURFACE ACTIVATION OF ALN FOR ELECTROLESS METAL DEPOSITION HILMAR ESROM, Asea Brown Boveri AG, Corporate Research, W Heidelberg, FRG ABSTRACT A new method for selective metal deposition on aluminum nitride (AIN) is presented. Excimer laser radiation is used for local decomposition of AIN in air. Hydrogenated amorphous silicon (a-Si:H) thin films have been considered for use in solar cell applications because of their significantly reduced cost. Their overall efficiency an.

  developed in the s, the excimer laser is computer controlled. it gives eye surgeons the ability to remove precise amounts of tissue from the . CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Nanostructured sol-gel TiO2 thin films spin coated on Na-Ca silicate glass plates are investigated. The films are irradiated by means of excimer (KrF*) pulsed laser irradiation with different pulse number at a constant laser energy density. The surface morphology of the virgin and laser processed films are followed.


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Excimer laser induced modifications of optical surfaces by S. E. Clark Download PDF EPUB FB2

Laurens CLFA, 16 Av. Prieur de la Côte d'Or, Arcueil Cedex, France, B. Sadras CLFA, 16 Av. Prieur de la Côte d'Or, Arcueil Cedex, France, F. Decobert CREA/MSA, 16 Av. Prieur de la Côte d'Or, Arcueil Cedex, France, F. Arefi-Khonsari Laboratoire de Génie des Procédés Plasma et Traitement de Surface, E.N.S.C.P., 11 Rue Pierre et Marie Curie, Paris Cedex, France Cited by:   Surface polishing with a ns ArF excimer laser.

An ArF excimer laser (Lambda Physics EMGwavelength: nm, pulse duration: 18 ns, pulse energy: mJ) was used for polishing. A square aperture that cut out the most homogeneous part of the beam was imaged onto the surface of the samples by a fused silica lens (f=5 cm).Cited by: T.N.

Baker, in Surface Engineering of Light Alloys, Summary. Laser surface modifications to produce clad and surface-alloyed coatings on titanium alloys have been extensively studied.

Laser nitriding has been widely investigated, but when high concentrations of nitrogen are used, cracking is invariably found, often penetrating from the surface to the substrate. We report on the surface modification effects using allyl‐diglycol CR39 polymer induced by laser irradiation at nm F2 laser (VUV) and nm KrF laser.

The motivation is to investigate the ablation effects on this polymer in optical waveguides application the ablation effects on this polymer in optical waveguides.

Fabrication of waveguides has been observed using continuous wave (CW) at Author: Rozalina Zakaria. Laser-induced surface modification of various polymers is presented as a suitable pretreatment of surfaces in a two-step metallization process. Materials such as polyamide (PA), polypropylene (PP), polystyrene (PS), polycarbonate (PC), acrylbutadienestyrene (ABS), styreneacrylnitril (SAN), polybutadieneterphtalate (PBT), and polyoxymethylen.

Laser-induced surface and structural modifications of germanium (Ge) in liquid environments of deionized water and ethanol have been investigated. Single crystal Ge () has been exposed by KrF excimer laser at four different fluences. Processing surfaces by laser needs an understanding of the mechanisms generated by irradiation.

In this work, to gain understanding of the mechanisms occurring during irradiation of TiO 2 thin films by means of KrF excimer laser, we have performed infrared time resolved reflectivity measurements.

This experimental investigation revealed modifications of the heating/cooling cycle. To obtain superior performance in adhesion, polyvinyl chloride (PVC) substrates were modified by excimer laser direct writing with different operating wavelengths, scanning speeds, and laser fluences.

The induced morphological and electrochemical changes were detailedly tested and analyzed. Microchannels were formed on the surfaces of the PVC substrates due to the laser ablation, where. Surface modification of dental tissues by KrF excimer laser radiation.

In this study the topographic and morphological changes induced in enamel and dentin surfaces by treating with KrF excimer laser radiation were studied as a function of the number of laser pulses and radiation fluence by scanning electron microscopy and optical. A hybrid theoretical model is presented to describe thermoplastic deformation effects on silicon surfaces induced by single and multiple ultrashort pulsed laser irradiation in submelting conditions.

An approximation of the Boltzmann transport equation is adopted to describe the laser irradiation process. The evolution of the induced deformation field is described initially by adopting the. The resulting processes are respectively: laser induced polarization, pulsed laser induced epitaxy, incorporation of atoms from the gas phase, and laser chemical etching.

In turn, the laser induced surface modifications and the presence of adsorbates on the surface cause important changes in the melting/solidification cycle. Surface treatments by laser irradiation can improve materials properties in terms of mechanical and physico- chemical behaviors, these improvements being related to the topography, the hardness, the microstructure, the chemical composition.

Up to now, the use of excimer lasers for industrial applications remained marginal in spite of the interest related to the short wavelength (high photon. A timely and comprehensive survey, Excimer Laser Technology reports on the current status and range of the underlying technology, applications and devices of this commonly used laser source, as well as the future of new technologies, such as F2 laser technology.

The use of lasers in many applications requires an understanding and control of the fundamental processes involved during the laser radiation-material interaction.

The importance and the duration of the phenomena involved (optical, thermal, mechanical, electromagnetic, radiative) depend on parameters such as the power density of the laser radiation, the nature and the surface morphology of the.

The modification induced in polystyrene (PS) by the ArF excimer laser radiation has been investigated. Various numbers of the laser pulses of the energies below the material ablation threshold. Excimer Laser Trifluoroacetic Anhydride Pulse Excimer Laser Longe Wavelength Radiation High Quality Engineering These keywords were added by machine and not by the authors.

This process is experimental and the keywords may be updated as the learning algorithm improves. The authors present results which show the topography of the laser-induced periodic surface structures formed upon samples of germanium, which had been irradiated at a wavelength of nm, and fused quartz irradiated at mu m.

Surface profiles are obtained from phaseshifting interferometry measurements. PDF | We report on the surface modification effects using allyl‐diglycol CR39 polymer induced by laser irradiation at nm F2 laser (VUV) and nm | Find, read and cite all the research.

Surface Modification and Film Mixing. Properties of Au and Cu layers deposited on photoablated polyphenylquinoxaline surfaces (A. Cros et al.). Laser-induced nucleation of crystals in amorphous Ge films (O. Bostanjoglo et al.). Laser-induced structural phase changes in i.

Purchase Laser and Ion Beam Modification of Materials - 1st Edition. Print Book & E-Book. ISBNPreparation of Organic Fine Particles by Excimer Laser-Induced Ablation of Solid Organic Monomers Surface Modification of.

Abstract Excimer laser irradiation of polymers can be used to generate a modification of the surface morphology at the irradiated regions. The normally smooth surface of synthetic fibres can be mod.Excimer-laser-induced modifications of optical surfaces The work in this thesis is a study of the interactions of a well characterized high power ultra violet excimer laser beam with solid optical quality surfaces, principally Al and Ge but with limited work on dielectrics.

In order to characterize the beam and to monitor the changes.Sato, Y, Tanizawa, K, Manns, F, Parel, JM & Murahara, M' Laser induced photochemical surface modification of PMMA for fibrin free intraocular lens ', Proceedings of SPIE - The International Society for Optical Engineering, vol.pp.