Novel high-power red laser diode transverse structure

Mihail M. Dumitrescu; Seppo Orsila; Pekka Savolainen; Mika Toivonen; Markus Pessa

doi:10.1117/12.380901

3 April 2000 Novel high-power red laser diode transverse structure

Mihail M. Dumitrescu, Seppo Orsila, Pekka Savolainen, Mika Toivonen, Markus Pessa

Proceedings Volume 3889, Advanced High-Power Lasers; (2000) https://doi.org/10.1117/12.380901
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

In the already classical separate confinement (SCH) quantum well (QW) semiconductor laser diode structures many of the desired performances are contradictory coupled through the structural parameters -- i.e. a structural parameter modification leading to the improvement of one or more laser performances will produce the deterioration of at least another performance. Based on an analysis of this contradictory coupling a novel transverse layer structure that alleviates the problem and enables improved laser diode performances is proposed. Both optical simulation and a fully self-consistent model are used in a design optimization methodology and simple evaluation and optimization criteria for the new transverse structure are derived. A number of the analyzed high-power edge-emitting Ga_zIn_1-zP/(Al_xGa_{1- x})_yIn_1-yP/GaAs quantum well laser structures were prepared using all-solid-source molecular beam epitaxy (SS-MBE) for layer growth and remarkable performances were obtained (continuous wave output powers of 3 W at 670 nm, 2 W at 650 nm, and 1 W at 630 nm; threshold current densities of 350 - 450 Angstrom/cm² for 670 nm, 500 - 540 A/cm² for 650 nm, and 600 - 680 A/cm² for 630 nm). Although only a few of the optimization features were implemented the good agreement between measurements and simulations for the prepared structures indicate that significant performance improvements -- predicted by the simulations -- are still possible.

Citation Download Citation

Mihail M. Dumitrescu, Seppo Orsila, Pekka Savolainen, Mika Toivonen, and Markus Pessa "Novel high-power red laser diode transverse structure", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); https://doi.org/10.1117/12.380901

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