Dropout dynamics in pulsed quantum dot lasers due to mode jumping
MetadataShow full item record
We examine the response of a pulse pumped quantum dot laser both experimentally and numerically. As the maximum of the pump pulse comes closer to the excited-state threshold, the output pulse shape becomes unstable and leads to dropouts. We conjecture that these instabilities result from an increase of the linewidth enhancement factor a as the pump parameter comes close to the excitated state threshold. In order to analyze the dynamical mechanism of the dropout, we consider two cases for which the laser exhibits either a jump to a different single mode or a jump to fast intensity oscillations. The origin of these two instabilities is clarified by a combined analytical and numerical bifurcation diagram of the steady state intensity modes.
Sokolovskii , G S , Viktorov , E A , Abusaa , M , Danckaert , J , Dudelev , V V , Kolykhalova , E D , Soboleva , K K , Deryagin , A G , Novikov , I I , Maximov , M V , Zhukov , A E , Ustinov , V M , Kuchinskii , V I , Sibbett , W , Rafailov , E U & Erneux , T 2015 , ' Dropout dynamics in pulsed quantum dot lasers due to mode jumping ' Applied Physics Letters , vol 106 , no. 26 , 261103 . DOI: 10.1063/1.4923244
Applied Physics Letters
© 2015 AIP Publishing LLC. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work which was originally published at http://dx.doi.org/10.1063/1.4923244.
This work was partially funded by the Erasmus Mundus External Cooperation Window (EMECW) programme under Project No. 141085-EM-1-2008-BE-ERAMUNDUS-ECWL02, the Research Foundation Flanders (FWO), the Fonds National de la Recherche Scientifique, and the Belgian Science Policy Office under Grant No. IAP-7/35 “photonics@be.” Support by the Russian Ministry of Science and Education (Grant ID: RFMEFI60714X0101) is acknowledged. Date of Acceptance: 17/06/2015
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.