23 February 2009 High reliability operation of 2 kW QCW 10-bar laser diode stacks at 808 nm
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Abstract
This paper presents the results obtained by Intense during the development of its 2 kW stack using Quantum Well Intermixing (QWI). A 200 W QCW bar operating at 808 nm has been designed with a 1 mm long cavity of which only a fraction is actively pumped. The bar has an 80% fill factor, and ten 200 W bars were stacked vertically in a G-type package with a 417 μm bar-to-bar pitch. The resulting compact emission area makes the stack compatible with most existing laser and electro-optic systems. A lifetime of 1x109 shots has been obtained with no measurable degradation.
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Valentin Loyo-Maldonado, Valentin Loyo-Maldonado, Gianluca Bacchin, Gianluca Bacchin, Stephen Robertson, Stephen Robertson, Kwong Man, Kwong Man, Bocang Qiu, Bocang Qiu, Stewart D. McDougall, Stewart D. McDougall, John H. Marsh, John H. Marsh, } "High reliability operation of 2 kW QCW 10-bar laser diode stacks at 808 nm", Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71981E (23 February 2009); doi: 10.1117/12.809321; https://doi.org/10.1117/12.809321
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