The International Laser Applications Symposium 2015

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Day 1 presentation programme

 

Plenary presentations

Chair: Neil Main (AILU President, Micrometric)9.15-10.15

"Ultra high-speed variable focus elements for advance beam delivery” – Craig ArnoldPrinceton University

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Keynote: Ultra high-speed variable focus elements for advance beam delivery

Author(s): Craig B. Arnold, Princeton Univ. (United States)

The ability to rapidly change the focal plane of an optical system or rapidly change the intensity distribution in a given focal plane has many important applications in real-world systems ranging from high powered laser processing to detailed high-resolution microscopy. For all these practical uses, a fast, tunable focus element with a low distortion and high transmission coefficient is necessary yet few viable systems exist. Here we present an overview of existing technologies to achieve highspeed z-scanning in optical beam delivery systems. Benefits and disadvantages of the different technologies will be discussed with particular emphasis on the tunable acoustic gradient index of refraction (TAG) Lens. The TAG lens is capable of varying focal length with sub-microsecond temporal resolution and is fast enough to create an effective line-focus without sacrificing optical power. Fundamental characterization of the TAG lens is presented including the performance metrics such as scanning speed, wavefront aberration, and optical throughput. Finally, recent application examples in laser processing and machine vision for process control will be discussed.

"Additive Manufacturing, a technology set for change?” – Bill O’Neill University of Cambridge

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Keynote: Additive manufacturing, a technology set for change?

Author(s): William O'Neil, The Univ. of Cambridge (United Kingdom)
The development of Additive Manufacturing, or 3D printing as it is more commonly known, has accelerated over the past 4-5 years. It is now an accepted technology, and has initiated many new web-based business models such as the Amazon 3D print shop. Current Additive Manufacturing technologies rely heavily on a range of basic technologies including inkjet and laser systems to transform raw materials into 3D shapes. Future application requirements demand higher speeds, a wider range of materials and lower costs. This talk reviews the latest developments in Additive Manufacturing and explores the role that lasers will play in future state-of-the-art systems.

Additive Manufacturing

Scope includes: Laser assisted manufacturing of 3D geometrical features. Blown powder, selective laser melting, novel methods and applications

Session 1 - Chair: Adam Clare - University of Nottingham10.45-12.15

Session 2 - Chair: Rob Scudamore - TWI13:45-15:00

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Cladding and Hardening

Scope includes: Techniques of material deposition, novel and high value applications

Session 1 - Chair: Paul Goodwin - Laser Cladding Technology15:30-17:00

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Sources and Beam Delivery

Scope includes: Laser sources, laser systems, beam delivery, optical systems, lens arrays, DOE's, SLM's

Session 1 - Chair: Malcolm Gower - Imperial College London10:45-12:15

Session 2 - Chair: Stan Wilford - IPG Photonics13:45-15:00

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Macro Cutting and Drilling

Scope includes: laser cutting and drilling from macro and milli scale excluding processing where ablation is the dominant mechanism

Session 1 - Chair: Martin Sharp - Liverpool John Moores University15:30-17:00

Session 2 – Chair: John Powell - Laser Expertise10:45-12:15

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Precision Fabrication

Scope includes: Creation of sub-mm features with high accuracy and repeatability, small scale material handling; applications in decorative arts.

Session 1 - Chair: Duncan Hand - Heriot-Watt University13:45-15:00

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Surface Marking and Functionality

Scope includes: Patterning to modify surface properties, associated laser and beam delivery developments, surface characterisation, process applications, patterning and scribing of areas (e.g. flat panels, PV's, PE)

Session 1 - Chair: Paul Harrison - SPI Lasers15:30-17:00

Session 2 – Chair: Jonathan Lawrence - University of Chestersee Day 2 15:15-16:45

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Day 2 presentation programme

 

Plenary presentations

Chair:  Ric Allott (AILU Vice-President, STFC)  9:00-10:00

"The evolution of laser materials processing applications in manufacturing industry” – Eckhard BeyerFraunhofer Institut Werkstoff und Strahltechnik

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 Keynote: The evolution of laser materials processing applications in manufacturing industry

Author(s): Eckhard Beyer, Fraunhofer IWS Dresden (Germany), Technische Univ. Dresden (Germany)
The presentation will show the rapid evolution of laser materials processing and will have a closer look on new developments. At present, the most important types of lasers in materials processing are diode lasers, disc lasers, fiber lasers and CO2 lasers. In materials processing with high power lasers the diode laser has established itself for all processes without need of extreme intensities. For cutting and 2D-welding processes CO2 lasers, fiber lasers and disc lasers are applied. This state-of-the-art will be faced considerable changes in the near future. High power fiber lasers represent a new generation of lasers for materials processing, characteristic traits of which are: smaller, cost-effective and processing on-the-fly. The laser materials processing has been pushed forward enormously by the development of high power fiber lasers and the further development of disc lasers. It is expected that high power diode lasers will be applied directly for welding and cutting very soon.

"Review of the European Laser Ecosystem” - Carlos LeeEuropean Photonics Industry Consortium (EPIC)

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Keynote: Review of the European Laser Ecosystem

Author(s): Carlos Lee, EPIC (Belgium)

The presentation will provide an overview of the European laser ecosystem. Not only the market size, but in the particular he areas of expertise will be reviewed. Which regions and clusters have particular competences, which research organizations have unique capabilities, highlight some of the European market leaders, and identify market opportunities for the European photonics industry. A helicopter view of the public research funding opportunities, collaboration tools, and frameworks will also be presented.

 

Welding

Scope includes: Laser and hybrid welding of both large and small components; and related joining techniques (e.g. laser soldering, bonding, brazing)

Session 1 - Chair: Nick Longfield - Rolls Royce 10:30-12:00

Session 2 - Chair: Stewart Williams - Cranfield University13:30-14:45

Session 3 - Chair: Chris Allen - TWI 15:15-16:45

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Micro & Nano Processing

Scope includes: Controlled removal or modification of material with spatial control at the 10µm scale or better; machining using nano and ultrafast pico and femto second lasers where ablation is the dominant effect; layer-by-layer machining

Session 1 - Chair: Jon Blackburn - TWI   10:30-12:00

Session 2 – Chair: Lin Li - University of Manchester  13:30-14:45

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Surface Marking and Functionality

Scope includes: Patterning to modify surface properties, associated laser and beam delivery developments, surface characterisation, process applications, patterning and scribing of areas (e.g. flat panels, PV's, PE)

Session 2 - Chair: Jonathan Lawrence - University of Chester15:15-16:45

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LASHARE

Scope includes:

Session 1 - Chair: Simon Andrews - Fraunhofer Centre for Applied Photonics10:30-12:00

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Funding Opportunities

Scope includes:

Session 1 - Chair: Paul Hilton - TWI13:00-14:45

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