August 24, 2005 11:59 ET

The Bar Has Been Raised

JENA, GERMANY -- (MARKET WIRE) -- August 24, 2005 -- High-power diode lasers are the most effective artificial light sources. This type of laser's use in the industrial field still is in the early stages and its potential in general has largely yet to be explored.

In the research and development department of the JENOPTIK Laserdiode GmbH -- a company of the JENOPTIK Group -- semiconductor bars from various manufacturers were examined as part of a project funded by BMBF (BRILASI) for achievable total performance in the cw mode of operation. The maximum capacity of material, layers, installation technology, cooling method, etc. were all taken into account. It was here that a new record could be achieved: 454 watts in cw mode was measured from a semiconductor bar with the dimensions 10 mm x 2 mm and a wavelength of 940 nm. The innovative cooling system of the semiconductor bar in connection with its high electro-optical efficiency made the operation at 580 A possible.

The semiconductor material in question was produced at the JENOPTIK Diode Lab GmbH in Berlin, also a member of the JENOPTIK Group. The company was founded two years ago for exactly the purpose of pushing the borders of semiconductor lasers into uncharted territory to broaden the use of these lasers. Specifically focussing on influencing emission characteristics, efficiency and thermal behaviour is the key to successful laser bar development.

Studying the behavior of high-power diode lasers being pushed to the limits leads to improvements in the products of the JENOPTIK Laserdiode GmbH ( Currently the standard line of products offers up to 120 W for actively cooled und 60 W for passively cooled semiconductor lasers.

Company portrait of JENOPTIK Laserdiode GmbH (

JENOPTIK Laserdiode GmbH develops, manufactures and markets high-power diode lasers. These new laser types offer high efficiency from a very small volume. They are used chiefly as an excitation source for solid state lasers or serve as a direct beam source in medical technology and material processing. Laserdiode GmbH has been part of the JENOPTIK Group since 1993. JENOPTIK Laserdiode GmbH is a subsidiary of JENOPTIK Laser, Optik, Systeme GmbH ( in the Photonics division of JENOPTIK AG, Jena. (

Company portrait of JENOPTIK Diode Lab GmbH (

JENOPTIK Diode Lab GmbH, located in Berlin-Adlershof, as a 100% subsidiary of JENOPTIK Laserdiode GmbH is part of the Photonics division of JENOPTIK AG ( The company, founded in Februar 2002 as a spin-off of the Ferdinand-Braun Institute in Berlin-Adlershof, currently has seven employees and is focused on manufacturing of opto-electronic elements for high-power diode lasers of JENOPTIK Laserdiode GmbH.

Contact Information

  • Additional information:
    Detlev Wolff
    Phone: +49-3641-65-4341
    Fax +49-3641-65-4392
    Email: Email Contact

    Denise Thim
    Phone: +49-3641-65-4366
    Fax +49-3641-65-4392
    Email: Email Contact

    JENOPTIK Laserdiode GmbH
    Göschwitzer Str. 29, 07745
    Jena, Germany
    Email: Email Contact