Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Increasing the Productivity of Ultrafast Laser Systems

17.06.2015

To advance the development of ultrafast laser systems for the industry, research institutes are now concentrating on increasing system productivity. To achieve this goal, Fraunhofer ILT is working in several different ways: on the one hand it is building stronger systems with record performances in the kW range. On the other hand, its researchers are working on tailor-made solutions for different applications. At LASER 2015, Fraunhofer ILT will be presenting, among others, a module for pulse shortening and a test system for an adjustable infrared laser with high power, each of which show new ways to increase efficiency in materials processing.

At the last UKP-Workshop: Ultrafast Laser Technology in Aachen from Fraunhofer ILT in April 2015, the participants agreed that an increase in productivity is currently the most important issue in industrial ultrafast lasers. The increase depends on many parameters, for example, the pulse energy, repetition rate and process control. Shorter pulses allow for greater precision and completely new machining processes, e.g., by multiphoton absorption or filament formation in glass.


Thin Disc amplifier with 1.5 kW

© Fraunhofer ILT, Aachen, Germany

New Module to Shorten the Pulses of Ultrafast Lasers with Highest Average Power

Fraunhofer ILT has now developed an optical module that shortens the pulse duration of powerful ultrafast lasers by a factor of four. The compact module is suitable for use in lasers with up to 1 kW average power and energy from 10 to 200 µJ. A 1 ps pulse can thus be compressed to about 250 fs, during which less than 10 percent of energy is lost and the beam quality is maintained.

The patent-pending technology of the pulse-shortening module was funded by the Federal Ministry of Education and Research (BMBF) as part of the FOCUS project. In the further development of the module, significantly higher pulse energies are to be achieved.

The pulse-shortening module can be combined with a femtosecond laser in the power range of 150 W, which has been newly developed at Fraunhofer ILT. The module has been fine-tuned for robustness and economy thanks to its particularly simple design. In its power class, it is even superior to the significantly more powerful INNOSLAB laser. Both concepts are characterized by their almost diffraction-limited beam quality.

New Record: Femtosecond Laser with 1.5 kW

By combining Thin Disk and INNOSLAB amplifiers, Fraunhofer ILT has set a new record for ultrafast lasers: the system delivers 1.5 kW average power at a pulse duration of 710 fs. Further optimization specifically of the thin-disk amplifier system should enable power beyond the 2 kW limit. This development has been supported by the BMBF as part of the FOCUS Project, as well as by the TRUMPF Group.

Industrial laser systems in this power class are particularly suitable for the processing of large parts, for example, those made of carbon fiber reinforced plastic (CFRP).

Powerful USP system for the SWIR Range

New beam sources for the infrared range at wavelengths of 1.5 to 3.5 µm (SWIR) provide an example of ultrafast laser technology solutions by Fraunhofer ILT, tailored for specific applications. Many technically and economically interesting material classes have an extremely high absorption in SWIR, which makes a series of innovative applications possible. So far, however, there has been a lack of sufficiently powerful lasers in this range.

Scientists at Fraunhofer ILT have now developed a test system that delivers laser power even over 20 W at 1.6 to 3.0 µm. The pulse duration can be between 900 fs and 1.5 ns. They are currently working on power scaling to more than 50 W. The test system can be adapted to different drive lasers and, thus, provide a wide range of application parameters.
The new system allows users to make both feasibility studies and provides process-optimized beam parameters for production.

Fraunhofer ILT at the LASER World of Photonics in Munich, Germany

From 22 - 25 June 2015 experts from the Fraunhofer ILT will be showing, among others, the module for pulse shortening for ultrafast laser systems and the test system for adjustable infrared lasers with high power at the Fraunhofer joint stand A3.121.
The researchers will also be presenting the exhibits at the Fraunhofer media tour on Tuesday, June 23, 2015. It starts at 11:00 a.m. at Booth 341 in Hall B3 and ends at approximately 12:00 midday at Booth 121 in Hall A3, followed by a discussion and light refreshments.

Contact

Dr. Peter Rußbüldt
Group Manager Ultrafast Lasers
Telephone +49 241 8906-303
peter.russbueldt@ilt.fraunhofer.de

Dipl.-Phys. Thomas Sartorius
Ultrafast Lasers
Telephone +49 241 8906-615
thomas.sartorius@ilt.fraunhofer.de

Dr. Bernd Jungbluth
Group Manager Nonlinear Optics and Tunable Lasers
Telephone +49 241 8906-414
bernd.jungbluth@ilt.fraunhofer.de

Fraunhofer-Institute for Laser Technology ILT
Steinbachstraße 15
52074 Aachen, Germany

Weitere Informationen:

http://www.ilt.fraunhofer.de

Petra Nolis | Fraunhofer-Institut für Lasertechnik ILT

More articles from Trade Fair News:

nachricht Make more with your 3D printers: from smooth surfaces to complex patterns
26.07.2019 | Inria Nancy-Grand Est

nachricht Fraunhofer IPT presents platform for automated precision assembly of polarized optical fibers
02.07.2019 | Fraunhofer-Institut für Produktionstechnologie IPT

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A miniature stretchable pump for the next generation of soft robots

Soft robots have a distinct advantage over their rigid forebears: they can adapt to complex environments, handle fragile objects and interact safely with humans. Made from silicone, rubber or other stretchable polymers, they are ideal for use in rehabilitation exoskeletons and robotic clothing. Soft bio-inspired robots could one day be deployed to explore remote or dangerous environments.

Most soft robots are actuated by rigid, noisy pumps that push fluids into the machines' moving parts. Because they are connected to these bulky pumps by tubes,...

Im Focus: Vehicle Emissions: New sensor technology to improve air quality in cities

Researchers at TU Graz are working together with European partners on new possibilities of measuring vehicle emissions.

Today, air pollution is one of the biggest challenges facing European cities. As part of the Horizon 2020 research project CARES (City Air Remote Emission...

Im Focus: Self healing robots that "feel pain"

Over the next three years, researchers from the Vrije Universiteit Brussel, University of Cambridge, École Supérieure de Physique et de Chimie Industrielles de la ville de Paris (ESPCI-Paris) and Empa will be working together with the Dutch Polymer manufacturer SupraPolix on the next generation of robots: (soft) robots that ‘feel pain’ and heal themselves. The partners can count on 3 million Euro in support from the European Commission.

Soon robots will not only be found in factories and laboratories, but will be assisting us in our immediate environment. They will help us in the household, to...

Im Focus: Scientists create the world's thinnest gold

Scientists at the University of Leeds have created a new form of gold which is just two atoms thick - the thinnest unsupported gold ever created.

The researchers measured the thickness of the gold to be 0.47 nanometres - that is one million times thinner than a human finger nail. The material is regarded...

Im Focus: Study on attosecond timescale casts new light on electron dynamics in transition metals

An international team of scientists involving the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) in Hamburg has unraveled the light-induced electron-localization dynamics in transition metals at the attosecond timescale. The team investigated for the first time the many-body electron dynamics in transition metals before thermalization sets in. Their work has now appeared in Nature Physics.

The researchers from ETH Zurich (Switzerland), the MPSD (Germany), the Center for Computational Sciences of University of Tsukuba (Japan) and the Center for...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

The power of thought – the key to success: CYBATHLON BCI Series 2019

16.08.2019 | Event News

4th Hybrid Materials and Structures 2020 28 - 29 April 2020, Karlsruhe, Germany

14.08.2019 | Event News

What will the digital city of the future look like? City Science Summit on 1st and 2nd October 2019 in Hamburg

12.08.2019 | Event News

 
Latest News

Stanford builds a heat shield just 10 atoms thick to protect electronic devices

19.08.2019 | Information Technology

Researchers demonstrate three-dimensional quantum hall effect for the first time

19.08.2019 | Physics and Astronomy

Catalysts for climate protection

19.08.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>