MUNICH, Germany, June 21 -- The technology group Jenoptik AG and the Trumph Group have entered into a cooperative relationship in the high-performance diode laser sector, aimed at joint further development of high-performance diode laser technology for industrial applications. Retroactively as of January 1, 2001, Trumph is acquiring a 25.1 percent share of Jenoptik Laserdiode GmbH, a company in the Jenoptik Photonics division. Until now, Jenoptik Laserdiode GmbH was 100 percent owned by Jenoptik, Laser, Optik, Systeme GmbH in Jena, Germany. The remaining 74.9 percent remains with the laser and optic specialist from Jena.