High wall-plug efficiency diode lasers with an Al-free active region at 975 nm

N. Michel; M. Calligaro; Y. Robert; M. Lecomte; O. Parillaud; M. Krakowski; T. Westphalen; M. Traub

doi:10.1117/12.808426

23 February 2009 High wall-plug efficiency diode lasers with an Al-free active region at 975 nm

N. Michel, M. Calligaro, Y. Robert, M. Lecomte, O. Parillaud, M. Krakowski, T. Westphalen, M. Traub

Proceedings Volume 7198, High-Power Diode Laser Technology and Applications VII; 71981H (2009) https://doi.org/10.1117/12.808426
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

In this work, we present high-wall plug efficiency (WPE) diode lasers at 975 nm, which are based on an Al-free active region. On a 2 mm x 100 μm laser, we have obtained a high maximum wall-plug efficiency of 69% at 10°C CW. Based on the same structure, we have realised a 1-cm bar, mounted on an active submount, and which delivers 70 W CW, together with 67% wall-plug efficiency. By improving the laser structure, we have obtained a higher WPE of 70% on an uncoated 2 mm x 100 μm broad area laser. We also present a new structure with a reduced fast-axis far-field of only 34° at 1/e².

Citation Download Citation

N. Michel, M. Calligaro, Y. Robert, M. Lecomte, O. Parillaud, M. Krakowski, T. Westphalen, and M. Traub "High wall-plug efficiency diode lasers with an Al-free active region at 975 nm", Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71981H (23 February 2009); https://doi.org/10.1117/12.808426

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