JLA Vol:2 Iss:1 (The Clinical Status of Low Energy Laser Therapy in 1989)
Authors:
Jeffrey R. Basford
Department of Physical Medicine and Rehabilitation, Mayo Clinic and Foundation, Rochester, MN, U.S.A. 55902Low energy laser therapy has gained varying acceptance as a treatment for a broad range of soft tissue, musculoskeletal and neurological conditions. A controversial, but surprisingly large body of research with cell cultures suggests that laser irradiation can nondestructively alter cellular processes. Unfortunately, animal and human studies are often contradictory and difficult to evaluate due to differing study designs. As a result, the clinical effectiveness of low energy laser therapy remains debatable. Nevertheless, the findings are intriguing a...
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JLA Vol:16 Iss:4 (Laser assisted cleaning of oxide films on SUS409 stainless steel)
Authors:
H. Guo
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
R. Martukanitz
Applied Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
T. DebRoy
Department of Materials Science and Engineering, The Pennsylvania State Univeristy, University Park, Pennsylvania 16802Laser assisted cleaning of oxide films on SUS409 stainless steel plates was studied both experimentally and theoretically. The highly oxidized surfaces with oxide scales of about 25 μm thickness were irradiated with Q-switched pulsed Nd:yttritium–aluminu...
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JLA Vol:24 Iss:4 (Direct laser writing-mediated generation of standardized topographies for dental implant surface optimization)
Authors:
Rainer Wittig
Institut fu¨r Lasertechnologien in der Medizin und Messtechnik (ILM) an der Universita¨t Ulm, 89081 Ulm, Germany
Erik Waller
Georg von Freymann
Arbeitsgruppe Optische Technologien und Photonik und Forschungszentrum OPTIMAS, Fachbereich Physik, Technische Universita¨t Kaiserslautern, 67663 Kaiserslautern, Germany
Rudolf Steiner
Institut fu¨r Lasertechnologien in der Medizin und Messtechnik (ILM) an der Universita¨t Ulm, 89081 Ulm, GermanyThe functionalization of dental implants, aiming at the improvement of long-term acceptance, is of pivotal interest in dental research. Bone, connectiv...
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JLA Vol:5 Iss:1 (Tutorial Guide: Laser Measurement Techniques Guide For Hazard Evaluation. Part 1)
Authors:
Terry Lyon
Laser Microwave Division, U.S. Army Environmental Hygiene AgencyA tutorial guide is presented to provide uniform guidance when performing radiometric measurements upon laser systems to perform a hazard evaluation. This guide was requested by and presented to the Department of Defense (DOD) Laser System Safety Working Group (LSSWG) to serve as a standardized method when performing hazard evaluations primarily upon tactical and training military laser systems including laser rangefinders and designators. Technical information is provided in detail to select a suitable detector, preform radiometric measurements, assess laser system pointing errors, calculate laser pr...
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JLA Vol:15 Iss:1 (Effect of wire feed position on laser welding with filler wire)
Authors:
A. S. Salminen
V. P. Kujanpa¨a¨
Lappeenranta University of Technology, Laser Processing Centre, Tuotantokatur 2, FIN 53850 Lappeenranta, FinlandThe utilization of the laser welding process with filler wire addition is often considered a complicated and difficult process which has too high accuracy demands for a work shop floor. This study shows the effect of some of the most important welding variables to the quality and efficiency of laser welding when welding with filler wire. The material used was a common structural steel St52/37 of 6 mm in thickness. The joint type used was a butt joint. Acceptable weld quality was achieved with most of the tested p...
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JLA Vol:19 Iss:1 (Combining high-speed laser perforation and cold roll forming for the production of biomedical microfiltration membranes)
Authors:
M. Baumeister
K. Dickmann
Laser Center University of Applied Sciences Muenster (LFM), Stegerwaldstrasse 39, 48565 Steinfurt, Germany
A. P. Hoult
SPI, 3 Wellington Park, Tollbar Way Hedge End, Southampton SO30 2QU, United KingdomA novel high speed two-step technique capable of performing large matrices of very small pores with micron dimensions in large sheets of thin stainless steel foils has been developed. This process combination is initiated by high-speed “on-the-fly” laser perforation. A 100 W fiber laser is capable of a very high drilling rate making it an attractive option for the creation of large drilling matrices ...
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JLA Vol:23 Iss:1 (Optimal process parameters for thermoplastic polyetheretherketone joints fabricated using transmission laser welding and Lumogen<sup>®</sup> IR absorptive pigment)
Authors:
Negin Amanat
School of Physics, University of Sydney, New South Wales 2006, Australia and Cochlear Ltd., 14 Mars Rd., Lane Cove, New South Wales 2066, Australia
Cedric Chaminade
John Grace
Raymax Applications, P.O. Box 958, Newport Beach, New South Wales 2106, Australia
Natalie L. James
Cochlear Ltd., 14 Mars Rd., Lane Cove, New South Wales 2066, Australia
David R. McKenzie
School of Physics, University of Sydney, New South Wales 2006, AustraliaThis study investigates the effects of the process parameters (laser power and irradiation time) on the bond quality of transmission laser welded polyether...
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JLA Vol:7 Iss:2 (A study of polarization‐maintaining fiber characteristics with applications to force and displacement sensing)
Authors:
P. V. P. Yupapin
K. Weir
K. T. V. Grattan
A. W. PalmerAn experimental investigation of three different types of highly birefringent fiber sensor element configured as a force and a displacement sensor is described. From the coupling of power between the two eigenmodes, the magnitude of the force and the position of the coupling point can then be determined using ‘white‐light interferometric’ techniques.
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JLA Vol:17 Iss:3 (Experimental study of CO<sub>2</sub> laser welding inside a groove— Application to high thickness laser welding)
Authors:
M. Hamadou
R. Fabbro
F. Coste
S. Slimani
GIP GERAILP/LALP (CNRS) 16 bis, Av. Prieur de la Coˆte d’Or 94114 Arcueil, FranceLaser welding inside a groove has to be considered when a high thickness material is welded. The use of a groove shape allows the access of the laser beam to the lower part of the groove. The choice of the groove geometry (groove width, depth, or aperture angle), as well as the assist gas setup (leading, trailing or backside protection) are then significant operating parameters for the process control. In this study, U- and V-shaped groove welding with a CO2 laser was investigated. The U-shaped ...
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JLA Vol:25 Iss:5 (Crack-free laser dicing of glass in the microelectronics industry)
Authors:
Guillaume Savriama
GREMI-UMR 7344, CNRS/Universite´ d'Orle´ans, 14 rue d'Issoudun, BP 6744, F-45067 Orle´ans cedex 2, France and STMicroelectronics, 10 rue de Thalès de Milet, CS 97155, 37071 Tours Cedex 2, France
Jose´ Mendez
Laurent Barreau
STMicroelectronics, 16 rue Pierre et Marie Curie, BP 7155, F-37071 Tours Cedex2, France
Chantal Boulmer-Leborgne
Nadjib Semmar
GREMI-UMR 7344, CNRS/Universite´ d'Orle´ans, 14 rue d'Issoudun, BP 6744, F-45067 Orle´ans cedex 2, FranceThis paper investigates laser dicing of glass (commercial Borofloat
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