ICALEO 2005 Paper #M410 (Microprocessing of Various Materials Using Femtosecond Laser Pulses)
Microprocessing of Various Materials Using Femtosecond Laser Pulses
Authors:
Udo Loeschner, University of Applied Sciences; Mittweida Germany
Andy Engel, University of Applied Sciences; Mittweida Germany
Steffen Weissmantel, University of Applied Sciences; Mittweida Germany
Guenter Reisse, University of Applied Sciences; Mittweida Germany
Presented at ICALEO 2005
Comprehensive results on femtosecond-laser microstructuring obtained at the laser institute of the University of Applied Sciences Mittweida will be presented. In our In-vestigations we used a femtosecond-laser micromachining station FS150-10 from the 3D Micromac AG Chemnitz equipped with a Ti: Sap...$28.00
ICALEO 2005 Paper #M409 (High Rep Rate Picosecond Laser Materials Processing)
High Rep Rate Picosecond Laser Materials Processing
Authors:
Chuck Ratermann, RPMC; O'Fallon MO USA
Bernhard Klimt, Lumera Laser; O'Fallon MO USA
Thomas Herrmann, Lumera Laser; O'Fallon MO USA
Presented at ICALEO 2005
Cold ablation of steel, aluminum, nickel, tungsten carbide, titanium, copper, silicon, Teflon, glass, diamond, ceramics, and other materials will be surveyed with an emphasis on the speed of the processing, the heat affected zone, and the recast. An overview of the methods and tools employed will be presented. This will include results from a 100 kHz laser and from a 500 kHz laser.$28.00
ICALEO 2005 Paper #M408 (Microstructuring Using Femtosecond Pulsed Laser Ablation)
Microstructuring Using Femtosecond Pulsed Laser Ablation
Authors:
Max Groenendijk, University of Twente; Enschede Netherlands
Presented at ICALEO 2005
A self-induced mechanism leading to the formation of periodic microstructures has been observed during femtosecond pulsed laser ablation with a high repetition laser source. The bottom of an ablated area, machined by the direct write method, shows two different kinds of microstructures. Dependant on the process parameters, a periodic ripple or a pillar structure emerges. The parameters leading to these phenomena have been identified as well as the possible variations in aspect ratios and feature sizes. Furthermore the application of such structur...$28.00
ICALEO 2005 Paper #M407 (Ultrashort Pulse Laser Micromachining Performance Enhancements)
Ultrashort Pulse Laser Micromachining Performance Enhancements
Authors:
Benjamin Campbell, Penn State Electro-Optics Center; Freeport PA USA
Jeffrey Thomas, Penn State Electro-Optics Center; Freeport PA USA
Vladimir Semak, Penn State Electro-Optics Center; Freeport PA USA
Presented at ICALEO 2005
Lasers have long been promised to be a revolutionary technology for manufacturing, but have not yet achieved the anticipated market penetration. Major hurdles still exist in bringing new technologies, such as ultrashort pulse lasers, to the manufacturing floor, the first being easily repeatable, high quality laser micromachining. We explored methods to improve the spatial an...$28.00
ICALEO 2005 Paper #M406 (Femtosecond Bulk Laser Micromachining of Microfluid Channels in PMMA)
Femtosecond Bulk Laser Micromachining of Microfluid Channels in PMMA
Authors:
Dave Farson, Ohio State University; Columbus OH USA
Chun Lu, Ohio State University; Columbus OH USA
Hae Choi, Ohio State University; Columbus OH USA
Presented at ICALEO 2005
Bulk machining of transparent materials is an interesting capability of offered by short pulse lasers. When a laser beam with high peak pulse power is focused inside of a transparent material, the material becomes vaporized and ionized by the laser energy and its expansion causes a small pore to form at the interaction site. By translating the beam so that multiple pores are connected, microfluidic passages can be machin...$28.00
ICALEO 2005 Paper #M405 (Effect of Ionization on Femtosecond Laser Pulse Propagation in Silicon)
Effect of Ionization on Femtosecond Laser Pulse Propagation in Silicon
Authors:
Huayu Li, Michigan State University; East Lansing Michigan USA
Hyungson Ki, Michigan State University; East Lansing MI USA
Presented at ICALEO 2005
In this article, femtosecond laser pulse propagation in a silicon target is simulated by considering the ionization process under intense electromagnetic field of the laser pulse. The electromagnetic field is computed by solving the Maxwell�s equations using the Finite-Difference Time-Domain method, and the two-temperature model is employed for electron-lattice energy coupling phenomena. The electrical conductivity is predicted by computing the electron a...$28.00
ICALEO 2005 Paper #M403 (Processing of Polymers by UV Picosecond Lasers)
Processing of Polymers by UV Picosecond Lasers
Authors:
Gediminas Raciukaitis, Institute of Physics; Vilnius Lithuania
Mindaugas Gedvilas, Institute of Physics; Vilnius Lithuania
Presented at ICALEO 2005
UV laser radiation is widely used for processing of polymers. We present the results obtained by investigation of the laser ablation processes with picosecond pulses in about 20 different organic materials. Micro-drilling and cutting of polymers were performed by the 266-nm radiation. The effect of laser fluence on the ablation rate and drilling depth was investigated.
Most of the materials showed two ablation thresholds. One of them was below 1 J/cm2 with a low material removal ...$28.00
ICALEO 2005 Paper #M402 (Direct Writing of Buried Waveguides in Hybrid Organic-Inorganic Sol-Gel by Femto-Second Laser Pulses)
Direct Writing of Buried Waveguides in Hybrid Organic-Inorganic Sol-Gel by Femto-Second Laser Pulses
Authors:
David K.Y. Low, Singapore Institute of Manufacturing Technology; Singapore
Xiao Zhang, Singapore Institute of Manufacturing Technology; Singapore
Hong Xie, Singapore Institute of Manufacturing Technology; Singapore
Z.L. Li, Singapore Institute of Manufacturing Technology; Singapore Singapore
GC Lim, Singapore Institute of Manufacturing Technology; Singapore
S.K. Pani, Nanyang Technological University; Singapore
C.C Wong, Nanyang Technological University ; Singapore
Presented at ICALEO 2005
Using 77...$28.00
ICALEO 2005 Paper #M401 (Realization of Precision Shaped-Hole Drilling Using Ultra-Fast Lasers (Invited Paper))
Realization of Precision Shaped-Hole Drilling Using Ultra-Fast Lasers (Invited Paper)
Authors:
Chen-Hsiung Cheng, Panasonic Boston Laboratory; Cambridge MA USA
Xinbing Liu, Panasonic Boston Laboratory; Cambridge MA USA
Presented at ICALEO 2005
Recently we developed the technique of using ultra-fast laser for shaped-hole fabrication in industrial applications. In particular, inkjet nozzles of funnel shape can be fabricated reproducibly, precisely and in high speed using the ultra-fast laser fabrication technique. A PC-controlled scanning mirror is used to steer laser beam and form an overlapped two-dimensional tool path. Laser beam is repetitively scanned over the target area of the...$28.00
ICALEO 2005 Paper #M304 (Laser-Assisted Imprinting of Self-Assembled Nanostructures)
Laser-Assisted Imprinting of Self-Assembled Nanostructures
Authors:
Hao Wang, University of Nebraska-Lincoln; Lincoln NE USA
Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
D.R. Alexander, University of Nebraska-Lincoln; Lincoln NE USA
D.W. Doerr, University of Nebraska-Lincoln; Lincoln NE USA
K. Mendu, University of Nebraska-Lincoln; Lincoln NE USA
Presented at ICALEO 2005
Nanoscale structuring is a promising area in which the easiest and effective processing methods are being developed. Based on the advantage of laser, associated with improved self-assembly technique, it is very effective to fabricate nanoscale structures, such a...$28.00
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