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Spectrochim Acta A Mol Biomol Spectrosc. 2007 Apr;66(4-5):819-23. Epub 2006 Nov 6.

High power CW (16W) and pulse (145W) laser diodes based on quantum well heterostructures.

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  • 1Ioffe Physico-Technical Institute, 26 Polytekhnicheskaya, St. Petersburg, Russian Federation.


We suggested and experimentally confirmed the effective method of internal optical loss reduction by high order mode suppression in a separate confinement quantum well laser heterostructure with asymmetric ultra thick waveguide. Manufacturing of InGaAs/GaAs/AlGaAs laser heterostructure with a 1.7 microm-thick asymmetric waveguide allowed attaining super low value of internal optical loss alphai=0.34 cm-1 preserving high efficiency and fundamental transverse mode operation. Record-high 16 W continuous wave (CW) and 145 W pulse room temperature front facet output optical power and 74% wallplug efficiency were attained in 100-microm-aperture 1.06-microm-emitting laser diodes with 3 mm cavity length.

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