High beta lasing in micropillar cavities with adiabatic layer design
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We report on lasing in optically pumped adiabatic micropillar cavities, based on the AlAs/GaAs material system. A detailed study of the threshold pump power and the spontaneous emission beta factor in the lasing regime for different diameters d(c) is presented. We demonstrate a reduction of the threshold pump power by over 2 orders of magnitude from d(c) = 2.25 mu m down to 0.95 mu m. Lasing with beta factors exceeding 0.5 shows that adiabatic micropillars are operating deeply in the cavity quantum electrodynamics regime.
Lermer , M , Gregersen , N , Lorke , M , Schild , E , Gold , P , Mork , J , Schneider , C , Forchel , A , Reitzenstein , S , Höfling , S & Kamp , M 2013 , ' High beta lasing in micropillar cavities with adiabatic layer design ' Applied Physics Letters , vol. 102 , no. 5 , 052114 . DOI: 10.1063/1.4791563
Applied Physics Letters
Copyright 2013, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters, Vol 102, Issue 5, and may be found at http://scitation.aip.org/content/aip/journal/apl/102/5/10.1063/1.4791563
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