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Osram Semiconductor Laser Achieves New Lab Record for Brilliance
  • USA - English


News provided by

Macrovision

Sep 29, 2016, 10:00 ET

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Because the chip is more brilliant, more light goes into the fiber. The same module produces a higher output power than is possible with the laser diodes currently used in this application.

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Sunnyvale, CA (PRWEB) September 29, 2016 -- Osram Opto Semiconductors has produced a broad area laser diode with a lateral brilliance of up to 4.8 W/(mm*mrad) in the laboratory. The more brilliant the laser, the more efficiently it can inject its light into optical fibers. This increases the output power of modules for pumping fiber lasers used for materials processing. This progress is one of the results of the project “Integrated MicroOptical and microTHermal Elements for diode lasers of high Brilliance” (IMOTHEB), which was funded by the German Federal Ministry of Education and Research and has now been successfully completed.

Brilliance is a measure of the combination of optical output power and beam quality. Brilliant laser sources generate a narrow beam of light with extremely small beam divergence and high power density. This property is crucial for the efficiency of fiber-coupled laser systems. The more brilliant the laser, the more light can be injected into an optical fiber.

Improved chip design
A lateral brilliance of up to 4.8 W per millimeter and milliradiant (W/(mm*mrad)) was achieved in the laboratory – one of the highest known values for broad area laser diodes. Optimization of the chip design provided the basis for this success, particularly the integration of microthermal and microoptical elements for beam shaping on the chip. The improvements were made in the course of the IMOTHEB research project coordinated by Osram. One of the aims of the project was to further develop laser chips so that they delivered greater optical output power with constant beam quality. One of the project partners, the Max Born Institute, provided considerable support for the chip development work in the form of extensive methodologies and analyses. The findings will now successively flow into product development.

Ten percent boost of pump module output power
An important application of fiber-coupled lasers is the pumping (injection of optical energy) of high-power lasers for materials processing. Fiber lasers in particular are gaining in importance, for example, in the cutting and welding of sheet metal for the automobile industry. Due to growing pressure on decreasing costs, the aim of IMOTHEB was to reduce the system costs for these pumping fiber lasers. Project partner DILAS Diodenlaser researched concepts for the automated assembly of diode lasers. Another key factor in the project was the brilliance of the laser sources. DILAS used a demonstration module to show that the improved Osram chips were capable of increasing the output power of the module by ten percent. “Because the chip is more brilliant, more light goes into the fiber,” explained Dr. Alexander Bachmann, Project Coordinator at Osram Opto Semiconductors. “The same module produces a higher output power than is possible with the laser diodes currently used in this application.”

The goal of the IMOTHEB research project was an increase in the efficiency of laser systems and a reduction of their production costs. The project (FKZ 13N12312) started in October 2012 and was supported by the German Federal Ministry of Education and Research (BMBF) as part of the “Integrated Microphotonics” initiative. Osram Opto Semiconductors coordinated the project. The other partners were DILAS Diodenlaser and the Max Born Institute.

Press Contact:
Kate Cleveland
Tel: 248-277-8018
Fax: 248-596-0395
Email: kate.cleveland(at)osram-os(dot)com

Technical Information:
Tel: 866-993-5211
Email: support(at)osram-os(dot)com
Sales contact: http://www.osram-os.com/sales-contacts

ABOUT OSRAM
OSRAM, based in Munich, is a globally leading lighting manufacturer with a history dating back more than 100 years. The portfolio ranges from high-tech applications based on semiconductor technology, such as infrared or laser lighting, to smart and connected lighting solutions in buildings and cities. OSRAM had around 33,000 employees worldwide at the end of fiscal 2015 (September 30) and generated revenue of almost €5.6 billion in that fiscal year. The company is listed on the stock exchanges in Frankfurt and Munich (ISIN: DE000LED4000; WKN: LED 400; trading symbol: OSR). Additional information can be found at http://www.osram.com

Charles Birkhead, Macrovision, http://www.macrovis.com, +1 215-348-1010, [email protected]

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