Extremely high-brightness kW-class fiber coupled diode lasers with wavelength stabilization

Robin K. Huang; Bien Chann; John D. Glenn

doi:10.1117/12.887332

25 May 2011 Extremely high-brightness kW-class fiber coupled diode lasers with wavelength stabilization

Robin K. Huang, Bien Chann, John D. Glenn

Proceedings Volume 8039, Laser Technology for Defense and Security VII; 80390N (2011) https://doi.org/10.1117/12.887332
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

TeraDiode has produced ultra-high brightness fiber-coupled direct diode lasers. A fiber-coupled direct diode laser with a power level of 1,040 W from a 200 μm core diameter, 0.18 numerical aperture (NA) output fiber at a single center wavelength was demonstrated. This was achieved with a novel beam combining and shaping technique using COTS diode lasers. The fiber-coupled output corresponds to a Beam Parameter Product (BPP) of 18 mm-mrad and is the lowest BPP kW-class direct diode laser yet reported. The laser has been used to demonstrate laser cutting and welding of steel sheet metal up to 6.65 mm thick. Higher brightness fiber-coupled diode lasers, including a module with 418 W of power coupled to a 100 μm, 0.15 NA fiber, have also been demonstrated.

Citation Download Citation

Robin K. Huang, Bien Chann, and John D. Glenn "Extremely high-brightness kW-class fiber coupled diode lasers with wavelength stabilization", Proc. SPIE 8039, Laser Technology for Defense and Security VII, 80390N (25 May 2011); https://doi.org/10.1117/12.887332

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