Diode example

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The beam source itself is a so-called laser bar with a size of 10 mm x 0.6 mm x 0.1 mm, which is mounted on top of a cooling unit. Today's state of the art output power is in the range of 30 to 50 Watts. By stacking these bars, laser power of several bars can be combined by optical superposition of the single beams; such a unit is called a "stack". By further combination of two or three stacks it is possible to reach an output power of up to 6000 Watt in the wavelength range of 800 to 980 nm.


1. Light from a pn-transition (approx. 5mW)	2. Laser bar (approx. 3W)	3. Mounting onto micro channel cooler (approx. 30W)

4. Beam froming by micro lenses	5. Stacking of heat sinks and bars(approx. 1kW)	Done !

DL High Power Series

ROFIN-SINAR diode lasers are used for industrial materials processing applications. Special cooling concept and stacking technology allow powers, which compete with conventional gas or solid state lasers. ROFIN-SINAR diode lasers have a system efficiency of more than 30 %, are very compact, almost maintenance free and provide lifetimes of more than 10.000 hours.

As a consequence of the special emission characteristics of the diode laser bars, ROFIN DL High Power Series lasers deliver a rectangular focal spot with a side ratio of about 3:1 and a Gaussian intensity distribution in the small axis and a top-hat distribution in the long axis.

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