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Osram Wins Beckurts Prize For Direct Green Laser

The scientists at Osram were honored by the Karl Heinz Beckurts Foundation for their projectors which are claimed to have unlimited depth of sharpness and extremely high resolution, which go beyond that of LED solutions.

Representing the entire research team, Désirée Queren, Stephan Lutgen and Adrian Avramescu from Osram Opto Semiconductors received the distinguished Beckurts Prize for their pioneering work in researching direct green semiconductor lasers.

This is a milestone for many applications – this laser will open up new markets, for example, in ultra-compact mobile RGB laser projectors.

 



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

 

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 in 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 beyond that of LED solutions. The low spectral bandwidth of semiconductor lasers enables a lifelike display of colors plus razor-sharp contrasts.

Osram only started developing direct blue laser diodes for RGB laser projection in 2006. Today these are used successfully in the first devices on the market. 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 500nm. In 2009 they took over the technological leadership in direct green laser diodes of >515nm with optical outputs more than 50mW.

The Karl Heinz Beckurts Foundation grants the award to honor outstanding scientific and technical achievements, which give rise to discernible impetus promoted by the prize winners for industrial innovations in Germany. The 2010 prize is handed over on 10 December.

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 ultra-compact 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 (funding code FKZ 13N9373).

In addition, Osram is working together with several German universities and research institutes in the innovative research field of nitride lasers. Désirée 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".

 

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