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Tailored Bar Architecture

Photonics Spectra
Jul 2012Dilas has developed a modular diode laser concept combining high power, high brightness, wavelength stabilization and low weight.

Through the optimization of semiconductor chip structures and optical parameters, the company has developed the tailored bar (T-Bar) architecture, delivering high beam quality and high power using standard micro-optic fast-axis collimators and slow-axis collimators, all assembled with automated processes. A monolithic multi-emitter source, the device takes advantage of handling multiple emitters during each manufacturing step to lessen complexity and enhance reproducibility of the beam quality and the fiber coupling.

Lab results demonstrated that the optical output power is scaled from 180 W coupled into a 100-μm, 0.22-numerical-aperture (NA) fiber up to 1.7 kW coupled into a 400-μm, 0.22-NA fiber. A lightweight laser unit with an output power of more than 300 W for a 200-μm, 0.22-NA fiber with a weight vs. power ratio of only 0.9-kg/kW can be produced.

The tailored bar product line is suitable for research and development in direct diode applications as well as for fiber and solid-state laser pumping and for defense technology.More products