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Osram semiconductor laser produces 8W output

Posted: 07 Feb 2003 ?? ?Print Version ?Bookmark and Share

Keywords:osram opto semiconductor? optical pumped semiconductor? ops disk laser? solid state laser? semiconductor laser?

Osram Opto Semiconductors GmbH has developed an optical pumped semiconductor (OPS) disk laser that delivers an optical output power of 8W from an optical pumping power of 19W at a wavelength of 980nm.

The company claims that the higher power and efficiency value enable laser projection for wide consumer applications such as laser televisions. Osram has been developing semiconductor lasers with high output power since June 2000 through the miniaturized radiation sources (MISTRAL) project.

The company claims that OPS semiconductor lasers can operate in the IR and red wavelength range, as well as between 900nm to 1,300nm. Coupled with their high output power and high quality beam output, Osram believes that the OPS disk lasers can replace solid-state lasers in various area applications.

The semiconductor material of the OPS disk lasers consists of an active layer of quantum films, which generate the light, and an integrated, high-quality semiconductor reflector. A part of the IR laser beam is then decoupled via a second, semi-permeable external resonator mirror. Finally, a frequency-doubling process using nonlinear optical crystals is used to convert the invisible IR beam into visible light.

In this process, two IR photons are converted into a single photon with twice the energy in the visible range of the spectrum.

The power output of OPS disk lasers can be scaled up or down in a similar fashion to solid-state lasers.

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