High reliability operation of 2 kW QCW 10-bar laser diode stacks at 808 nm

Valentin Loyo-Maldonado; Gianluca Bacchin; Stephen Robertson; Kwong Man; Bocang Qiu; Stewart D. McDougall; John H. Marsh

doi:10.1117/12.809321

23 February 2009 High reliability operation of 2 kW QCW 10-bar laser diode stacks at 808 nm

Valentin Loyo-Maldonado, Gianluca Bacchin, Stephen Robertson, Kwong Man, Bocang Qiu, Stewart D. McDougall, John H. Marsh

Author Affiliations +

Proceedings Volume 7198, High-Power Diode Laser Technology and Applications VII; 71981E (2009) https://doi.org/10.1117/12.809321
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

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.

Citation Download Citation

Valentin Loyo-Maldonado, Gianluca Bacchin, Stephen Robertson, Kwong Man, Bocang Qiu, Stewart D. McDougall, and 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); https://doi.org/10.1117/12.809321

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