ICALEO 2010 Paper #M503 (Microlens Arrays Fabricated on Polycarbonate Sheets Via Pulsed Laser Maskless Interference Patterning)
Microlens Arrays Fabricated on Polycarbonate Sheets Via Pulsed Laser Maskless Interference Patterning
Authors:
Rui Guo, Woodruff School of Mechanical Engineering, Georgia Institute of Technology; Atlanta GA USA
Dajun Yuan, Woodruff School of Mechanical Engineering, Georgia Institute of Technology; Atlanta GA USA
Suman Das, Woodruff School of Mechanical Engineering, Georgia Institute of Technology; Atlanta GA USA
Presented at ICALEO 2010
: A method is developed to fabricate large areas of microlens arrays on flexible substrates of polycarbonate film via maskless laser interference patterning. Nanosecond pulsed Nd:YAG laser with 266nm wavelength is used to generate two-...$28.00
ICALEO 2010 Paper #M504 (Fabrication of Hierarchical Microstructures on Metals by Means of Direct Laser Interference Patterning)
Fabrication of Hierarchical Microstructures on Metals by Means of Direct Laser Interference Patterning
Authors:
Matthias Bieda, Fraunhofer Institute for Material and Beam Technology; Dresden Germany
Andres Lasagni, Fraunhofer Institute for Material and Beam Technology; Dresden Germany
Eckhard Beyer, University of Technology Dresden, Institute for Surface and Production Technology; Dresden Germany
Presented at ICALEO 2010
We have studied the fabrication of hierarchical periodic microstructures on metals by means of Direct Laser Interference Patterning. A nanosecond pulsed Nd:YAG laser at 355 nm wavelength was used to produce the microstructures with grating periods rang...$28.00
ICALEO 2010 Paper #M505 (Picosecond Laser 4-Beams Interference Ablation of Metal Films for Microstructuring)
Picosecond Laser 4-Beams Interference Ablation of Metal Films for Microstructuring
Authors:
B. Voisiat, Laboratory for Applied Research, Center for Physical Science and Technology; Vilnius Lithuania
M. Gedvilas, Laboratory for Applied Research, Center for Physical Science and Technology; Vilnius Lithuania
G. Raciukaitis, Laboratory for Applied Research, Center for Physical Science and Technology; Vilnius Lithuania
Presented at ICALEO 2010
Interfering of laser beams with the high pulse energy gives an opportunity to direct structuring over large areas. We report results of the laser beam interference ablation (LBIA) of thin metal film on the glass substrate irradiated b...$28.00
ICALEO 2010 Paper #M506 (Laser-Induced Plasma Investigations during Material Processing)
Laser-Induced Plasma Investigations during Material Processing
Authors:
David Diego-Vallejo, Technische Universitat Berlin, Institut fur Optik und Atomare Physik; Berlin Germany
David Ashkenasi, Laser und Medizin-Technologie Berlin; Berlin Germany
Hans Joachim Eichler, Technical University of Berlin, Optics Institute; Berlin Germany
Gerd Illing, Laser und Medizin-Technologie Berlin GmbH; Berlin Germany
Presented at ICALEO 2010
Laser-induced breakdown spectroscopy (LIBS), a versatile analytical tool used to determine sample compositions, has recently been applied to monitor and control of laser material processing. By observing the induced plasma during las...$28.00
ICALEO 2010 Paper #M507 (Laser Microprocessing Powered by UV Photons)
Laser Microprocessing Powered by UV Photons
Authors:
Ralph Delmdahl, Coherent Gmbh; Goettingen Germany
Rainer Paetzel, Coherent Gmbh; Goettingen Germany
Presented at ICALEO 2010
Lasers with ultraviolet (UV) output offer unique benefits for processing a wide range of materials. In particular, the short wavelength, high energy UV photons experience less diffraction than longer visible or infrared wavelengths, which enables materials processing at higher spatial resolution. In addition, UV lasers micromachine primarily by non-thermal means, thus minimizing the heat affected zone due to processing.
Excimer lasers emitting in the UV region deliver pulse energies scalable up to 1000 mJ ...$28.00
ICALEO 2010 Paper #M508 (Investigations on the Laser Induced Polymerization of Organic-Inorganic Hybrid Oligomers for Micro Stereo Lithography Applications)
Investigations on the Laser Induced Polymerization of Organic-Inorganic Hybrid Oligomers for Micro Stereo Lithography Applications
Authors:
Andre Neumeister, Laser Zentrum Hannover e.V. (LZH); Hannover Germany
Martina Carsjens, Laser Zentrum Hannover e.V. (LZH); Hannover Germany
Florian Pape, Leibniz Universitaet Hannover, Institut fuer Mikroproduktionstechnik (IMPT); Garbsen Germany
Lutz Rissing, Leibniz Universitaet Hannover, Institut fuer Mikroproduktionstechnik (IMPT); Garbsen Germany
Rainer Kling, Laser Zentrum Hannover e.V. (LZH); Hannnover Germany
Presented at ICALEO 2010
For Micro Stereolithography applications, the correlation between...$28.00
ICALEO 2010 Paper #M509 (Laser Materials Synthesis of a Wide Bandgap Energy Converter with Embedded Concentrator and Dc-Ac Inverter)
Laser Materials Synthesis of a Wide Bandgap Energy Converter with Embedded Concentrator and Dc-Ac Inverter
Authors:
A. Kar, University of Central Florida CREOL SoO; Orlando FL USA
Nathaniel Quick, AppliCote Associates LLC; Lake Mary FL USA
Presented at ICALEO 2010
The laser materials synthesis building blocks to process an embedded lens and inverter circuit in a wide bandgap material direct energy converter are presented. A single crystalline silicon carbide wafer is wide area laser doped with aluminum, chromium, selenium and nitrogen to optimize conversion of electromagnetic radiation to electrical energy. The laser doping process is based on solid state diffusion at temperatu...$28.00
ICALEO 2010 Paper #M601 (Laser Ablation by Optical Vortex Beams )
Laser Ablation by Optical Vortex Beams
Authors:
Takashige Omatsu, Graduate School of Advanced Integration Science, Chiba University; Chiba
Presented at ICALEO 2010
Metal laser ablation using nanosecond optical vortex pulses with orbital angular momentum was performed. Optical vortex was capable of providing energy and cost saving material processing with less debris. Microneedle fabrication on a metal surface based on optical vortex laser ablation was also demonstrated. The resulting needle showed a height of at least 10 m above the target surface and a tip diameter of less than 0.3 m.$28.00
ICALEO 2010 Paper #M603 (Application of a Pulse Programmable Fiber Laser to a Broad Range of Micro-Processing Applications)
Application of a Pulse Programmable Fiber Laser to a Broad Range of Micro-Processing Applications
Authors:
M. Rekow, PyroPhotonics Lasers Inc.; Campbell CA USA
R. Murison, PyroPhotonics Lasers Inc.; Campbell CA USA
Tullio Panarello, PyroPhotonics Lasers Inc.; Campbell CA USA
C. Dunskey, Aeos Consulting Inc.; Los Gatos CA USA
C. Dinkel, Industrial Materials Institute, Centre for Automotive Materials and Manufacturing, National Research Council of Canada; 800 Collip Circle ON Canada
S. Nikumb, Industrial Materials Institute, Centre for Automotive Materials and Manufacturing, National Research Council of Canada; London ON Canada
Presented at ...$28.00
ICALEO 2010 Paper #M604 (Pulse Shape Control of a MOPA Fiber Laser for Marking of Stainless Steel and Other Materials)
Pulse Shape Control of a MOPA Fiber Laser for Marking of Stainless Steel and Other Materials
Authors:
Sami Hendow, Multiwave Photonics, R. Eng.; Maia Portugal
Paulo T. Guerreiro, Multiwave Photonics, R. Eng.; Maia Portugal
Niels Schilling, Fraunhofer Institute IWS Dresden; Dresden Germany
Jan Rabe, Fraunhofer Institute IWS Dresden; Dresden Germany
Presented at ICALEO 2010
MOPA Fiber laser is used to demonstrate controlled ablation of metals, silicon and thin film materials using both the single-pulse as well as double-pulse laser format. Double pulsing is where the energy of one pulse is split into two succeding pulses. Ablation of silicon, metals and ce...$28.00