High-power diode lasers based on InGaAsP spacer and waveguide layers with AlGaAs cladding layers

Goetz Erbert; Frank Bugge; Arne Knauer; Juergen Sebastian; Klaus Vogel; Marcus Weyers

doi:10.1117/12.237684

10 April 1996 High-power diode lasers based on InGaAsP spacer and waveguide layers with AlGaAs cladding layers

Goetz Erbert, Frank Bugge, Arne Knauer, Juergen Sebastian, Klaus Vogel, Marcus Weyers

Proceedings Volume 2683, Fabrication, Testing, and Reliability of Semiconductor Lasers; (1996) https://doi.org/10.1117/12.237684
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Broad-area stripe laser diodes based on GaAs and Al-free spacer and Al-free spacer and waveguide layers were studied and compared to conventional AlGaAs-laser diodes. The structures were grown by low pressure MOVPE (metal organic vapor phase epitaxy). For the active region InGaAs-single quantum wells with an emission wavelength of 915 nm were used. Threshold current density, internal loss and internal efficiency are comparable for the three structures under study. The use of a quaternary spacer layer instead of GaAs improves the performance for laser diodes with a low divergence ((Theta) _{perpendicular} equals 20 degree(s) FWHM). Using a non-optimized facet coating procedure about 1.2 W cw output power at a vertical divergence of (Theta) _{perpendicular} equals 26.5 degree(s) are obtained from a 50 micrometers wide stripe laser with Al-free waveguides.

Citation Download Citation

Goetz Erbert, Frank Bugge, Arne Knauer, Juergen Sebastian, Klaus Vogel, and Marcus Weyers "High-power diode lasers based on InGaAsP spacer and waveguide layers with AlGaAs cladding layers", Proc. SPIE 2683, Fabrication, Testing, and Reliability of Semiconductor Lasers, (10 April 1996); https://doi.org/10.1117/12.237684

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