Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Advanced materials optimization increases the lifetime for fiber lasers

19.05.2008
Researchers have found new methods for optimizing glass in order to increase the lifetime of fiber lasers. The trend is to produce fiber lasers with higher output powers, which places great demands on the optical fiber. This has been shown at Mid Sweden University in Sweden.

The interest in fiber lasers has increased dramatically in the last decade. The main driving force is coming from the industry, where these lasers are used for different kinds of materials processing such as cutting, drilling, and welding.

The fiber laser offers many advantages compared with conventional lasers in terms of better beam quality, lower prices, and a more compact design. However, it turns out that the glass material in the optical fiber looses its transparency with time, a phenomenon called "photodarkening".

This effect considerably shortens the operational lifetime of the fiber laser.

"This is primarily a concern at high output levels associated with applications using a pulsed laser configuration," says Magnus Engholm, a doctoral candidate in fiber optics.

One example of such applications is marking, where part of the surface material has to be burnt off from the object to be marked.

Fortunately the glass material can be optimized to extend the lifetime of these lasers. By choosing a proper composition and optimizing the synthesis conditions, scientists can now attain higher output powers and longer lifetimes. This will also open up for new areas of industrial application.

This research has been carried out collaboratively by Mid Sweden University and Acreo FiberLab.

Please direct any questions to: Magnus Engholm, phone: +46 (0)60-14 87 37; cell phone: +46 (0)70-483 8183; e-mail: Magnus.Engholm@miun.se

Pressofficer Lars Aronsson, +46-705 165 336;Lars.Aronsson@miun.se

Lars Aronsson | idw
Further information:
http://www.vr.se

More articles from Power and Electrical Engineering:

nachricht Linear potentiometer LRW2/3 - Maximum precision with many measuring points
17.05.2017 | WayCon Positionsmesstechnik GmbH

nachricht First flat lens for immersion microscope provides alternative to centuries-old technique
17.05.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>