High power broad area 808 nm DFB lasers for pumping solid state lasers

A. Klehr; F. Bugge; G. Erbert; J. Fricke; A. Knauer; P. Ressel; H. Wenzel; G. Tränkle

doi:10.1117/12.644568

22 February 2006 High-power broad-area 808 nm DFB lasers for pumping solid state lasers

A. Klehr, F. Bugge, G. Erbert, J. Fricke, A. Knauer, P. Ressel, H. Wenzel, G. Tränkle

Proceedings Volume 6133, Novel In-Plane Semiconductor Lasers V; 61330F (2006) https://doi.org/10.1117/12.644568
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

Experimental investigations on high-power broad area (BA) distributed-feedback (DFB) lasers emitting in the wavelength range around 808 nm are presented. An output power of 4.7 W at 20 °C with a differential quantum efficiency of 1.06 W/A is achieved with BA-DFB lasers having a stripe width of 100 μm and a cavity length of 3000 μm. The measured lateral far field angle is about 10° at a power of 3 W. The vertical far field angle is near 29°. The emission has a narrow spectral width of 0.06 nm (FWHM) at 3 W and 0.10 nm at 4 W. From mappings of the optical spectra a wavelength variation with output power of Δλ/ΔP = 0.44 nm/W and with injection current of 0.4 pm/mA can be deduced. At a temperature of 50°C a maximum output power of 2 W is measured. From the measurements a temperature coefficient of Δλ/ΔT = 0.075 nm/K is determined.

Citation Download Citation

A. Klehr, F. Bugge, G. Erbert, J. Fricke, A. Knauer, P. Ressel, H. Wenzel, and G. Tränkle "High-power broad-area 808 nm DFB lasers for pumping solid state lasers", Proc. SPIE 6133, Novel In-Plane Semiconductor Lasers V, 61330F (22 February 2006); https://doi.org/10.1117/12.644568

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