Impact of nanomechanical resonances on lasing from electrically pumped quantum dot micropillars
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We use a picosecond acoustics technique to modulate the laser output of electrically pumped GaAs/AlAs micropillar lasers with InGaAs quantum dots. The modulation of the emission wavelength takes place on the frequencies of the nanomechanical extensional and breathing (radial) modes of the micropillars. The amplitude of the modulation for various nanomechanical modes is different for every micropillar which is explained by a various elastic contact between the micropillar walls and polymer environment.
Czerniuk , T , Tepper , J , Akimov , A V , Unsleber , S , Schneider , C , Kamp , M , Hoefling , S , Yakovlev , D R & Bayer , M 2015 , ' Impact of nanomechanical resonances on lasing from electrically pumped quantum dot micropillars ' Applied Physics Letters , vol 106 , no. 4 , 041103 . DOI: 10.1063/1.4906611
Applied Physics Letters
Copyright 2015 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: Czerniuk, T., Tepper, J., Akimov, A. V., Unsleber, S., Schneider, C., Kamp, M., Hoefling, S., Yakovlev, D. R., & Bayer, M. (2015). Impact of nanomechanical resonances on lasing from electrically pumped quantum dot micropillars. Applied Physics Letters, 106(4), . The article may be found at http://scitation.aip.org/content/aip/journal/apl/106/4/10.1063/1.4906611
The work was sponsored by the German Ministry of Education and Research (BMBF) within the RELQUSA project (FKZ: 13N12462) and the Deutsche Forschungsgemeinschaft (Ba1549/14-1 and Collaborative Research Centre TRR 142). The work was also supported by the state of Bavaria. A.V.A. acknowledges the Alexander-von-Humboldt Foundation. S.H. acknowledges support by the Royal Society and the Wolfson Foundation. Date of Acceptance: 06/01/2015
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