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Osram Team Feted for Direct Green-emitting Laser

Photonics.com
Dec 2010
SUNNYVALE, Calif., Dec., 22, 2010 — Scientists at Osram Opto Semiconductors, based in Regensburg, Germany, have been awarded the Beckurts Prize by the Karl Heinz Beckurts Foundation for developing a direct green-emitting laser.


Scientists at Osram Opto Semiconductors today received the distinguished Beckurts Prize for development work on the direct green laser diode. (Images: Osram)

Representing the entire research team, Désirée Queren, Stephan Lutgen and Adrian Avramescu from Osram received the distinguished Beckurts Prize for pioneering the work that will open up new markets, for example, in ultracompact mobile RGB laser projectors.

The Karl Heinz Beckurts Foundation grants the award annually on Dec. 10 to honor outstanding scientific and technical achievements that give rise to discernible impetus for industrial innovations in Germany.

The availability of very small and low-cost red, blue and green semiconductor lasers is crucial for large-scale diffusion of RGB laser projection. The laser diodes enable production of low-cost, compact and efficient pico-projectors, which can be incorporated into mobile devices such as smart-phones or digital cameras. Due to the particular beam properties of lasers, these projectors have unlimited depth of sharpness and extremely high resolution, which go even beyond that of LED solutions. The low spectral bandwidth of semiconductor lasers enables lifelike display of colors plus razor-sharp contrasts.


Stephan Lutgen, Désirée Queren and Adrian Avramescu (left to right) have received the Beckurts Prize for development of a direct green semiconductor laser for projection applications.


Osram only started developing direct blue laser diodes for RGB laser projection in 2006. Based on the findings for the blue laser in the InGaN material system, the team managed within a very short time to break through the barrier to green from a wavelength of 500 nm. In 2009, they took over the technological leadership in direct green laser diodes of >515 nm with optical outputs of more than 50 mW.

The basic development of blue and green laser diodes and research into miniaturization of systems in mobile laser projection are supported by project Molas — technologies for ultracompact and mobile laser projection systems — as part of the “Optical components and systems for volume markets” funding initiative of the German Federal Ministry of Education and Research. Additionally, Osram is working with several German universities and research institutes in the innovative research field of nitride lasers. Queren, for example, wrote her dissertation based on a collaboration with the University of Erlangen.

The foundation for the results with the semiconductor lasers was laid as early as 1998 through development work with UV lasers, especially in the project "Blue laser based on GaN for innovative storage systems.”

For more information, visit:  www.osram-os.com 





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