22 Jan 2007
Jenoptik Laserdiode increases the output power of diode lasers while sister company Jenoptik Unique-Mode boosts brightness of integrated laser module.
At this week's Photonics West show in San José, Ca, US, Jenoptik companies Diode Lab (JDL), Laserdiode and Unique-Mode, together known as the Diode Laser Group of Jenoptik, are presenting positive results and launching new solutions to the market. The trio are developing and manufacturing high-power diode lasers, available as unassembled diode laser bars, single emitters or as complete diode lasers featuring beam shaping, vertical and horizontal diode laser stacks and fiber-coupled diode laser modules.
Optimizing the process of turning semiconductor material into "high quality" bars at Jenoptik Diode Lab, combined with a novel assembly technology at Jenoptik Laserdiode, has led to a further output power increase in all of the group's heat-conduction cooled products. Diode lasers with a previous output limit of 60 W now deliver up to 100 W from one high-efficiency bar or 140 W from a fiber-coupled module based on two high-efficiency diode lasers. This means that all passively cooled diode lasers can now be used in the same power class as the actively cooled diode lasers.
In addition to the increased power for all passively cooled diode lasers in CW mode, an increase in output for diode lasers in pulse mode to 200 W per bar has also been achieved. Further quality improvements were achieved through Jenoptik's surpassing of previous power barrier of 1 kW optical output from a 10 mm bar without destroying the optical mirror. With this, the catastrophic optical mirror damage level was raised to more than 210 W per mm.
New fiber-coupled diode laser module
Furthermore, Jenoptik Unique Mode is unveiling a new fiber-coupled diode laser module (JUM20K/100/20) with a power output of 20 W from one fiber with a core diameter of 100 µm at Photonics West 2007. The module is based on the new JDL chip design and offers a high-brightness as well as high coupling efficiency.
More Photonics West news at optics org's blog