Patent
Use of multiple laser sources for rapid, flexible machining and production of vias in multi-layered substrates
Roy D. Mead,Jeffrey W. Pierce +1 more
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In this paper, a laser via drilling system, and a method of use thereof, is provided, where the output beams from the independently controlled laser systems are combined using a beam splitter that combines the beams into single or multiple processing beams.Abstract:
A laser via drilling system, and a method of use thereof, is provided. The apparatus uses two or more laser systems to achieve processing parameter flexibility. The output beams from the independently controlled laser systems are combined using a beam splitter that combines the beams into single or multiple processing beams. The operational flexibility of the system can be further enhanced through the use of multiple EO modulators and a polarization sensitive beam splitter.read more
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Patent
Lasers for synchronized pulse shape tailoring
Yunlong Sun,Lei Sun +1 more
TL;DR: A plurality of sub-resonators (12, 14 ), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective pulse energy profile and/or pulse width characteristics imparted by the configurations of the sub-reonators as discussed by the authors.
Patent
Process for making a hole and device
Thomas Beck,Georg Bostanjoglo +1 more
TL;DR: In this article, a method for producing a hole in a turbine blade, a combustion chamber lining or a gas-or steam turbine by pulsed laser beams is described, where the method is carried out in several process steps and shorter laser pulse lengths are used in a first process step than in a final process step, and continuously enlarging the laser pulse length up to a depth of the hole during the progress of a hole formation from an outer surface of the component.
Patent
Laser beam machine and calculation device for laser beam machine
TL;DR: A laser beam machine as discussed by the authors consists of a number of laser modules that each generate a laser beam and a combiner that collects a plurality of laser beams generated from the laser modules to output one laser beam.
Patent
Polymer tubing laser micromachining
TL;DR: In this paper, an athermal ablation of a workpiece is performed by using a laser device to direct a laser beam at the workpiece to remove a plurality of sections.
Patent
Laser system for processing a memory link with a set of at least two laser pulses
TL;DR: In this paper, a set of laser pulses (52) is employed to sever a conductive link (22) in a memory or other IC chip; the duration of the set (50) is preferably shorter than 1,000 ns; and the pulse width of each laser pulse within the set of 50 is preferably within a range of about 0.1 ps to 30 ns.
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Patent
Ultraviolet laser system and method for forming vias in multi-layered targets
Mark D. Owen,James N. O'brien +1 more
TL;DR: In this paper, the output of a continuously pumped, Q-switched, Nd:YAG laser (10) is frequency converted to provide ultraviolet light for forming vias (72, 74) in multi-layered targets (40).
Patent
Method employing UV laser pulses of varied energy density to form depthwise self-limiting blind vias in multilayered targets
TL;DR: In this article, the output of a continuously pumped, Q-switched, Nd:YAG laser is converted to provide ultraviolet light for forming vias in targets (40) having metallic layers (64,68) and a dielectric layer (66).
Patent
Dental procedures and apparatus using ultraviolet radiation
TL;DR: In this paper, the authors proposed an improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures, where there exists distinct ablation thresholds for hard and soft tissues which are dependent on the material being ablated for a given wavelength of the ultraviolet radiation.
Patent
Low cost, high average power, high brightness solid state laser
TL;DR: In this article, a seed laser beam with a short pulse duration was used to produce a high average power, high brightness solid state laser system, where a laser amplifier (24) amplifies the seed beam to produce an amplified pulse laser beam which is tightly focused to produce pulses with brightness levels in excess of 1011 Watts/cm2.
Patent
Laser system and method for plating vias
TL;DR: The output of a continuously pumped, Q-switched, Nd:YAG laser is frequency converted to provide ultraviolet light for plating internal wall surfaces (79, 126) of vias in multilayered electronic devices as mentioned in this paper.