skip to main content

Title: Dropout dynamics in pulsed quantum dot lasers due to mode jumping

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 α 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.
Authors:
; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [5] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12]
  1. Ioffe Physical-Technical Institute, St. Petersburg (Russian Federation)
  2. National Research University of Information Technologies, Mechanics and Optics, Saint Petersburg (Russian Federation)
  3. (Belgium)
  4. (APHY), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels (Belgium)
  5. Applied Physics Research Group (APHY), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels (Belgium)
  6. (Country Unknown)
  7. St. Petersburg State Electrotechnical University “LETI,” St. Petersburg (Russian Federation)
  8. St. Petersburg State Polytechnical University, St. Petersburg (Russian Federation)
  9. Academic University, St. Petersburg (Russian Federation)
  10. University of St. Andrews, St. Andrews (United Kingdom)
  11. Aston Institute of Photonic Technologies, Aston University, Birmingham (United Kingdom)
  12. Optique Nonlinéaire Théorique, Campus Plaine CP 231, 1050 Bruxelles (Belgium)
Publication Date:
OSTI Identifier:
22483105
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 26; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BIFURCATION; DIAGRAMS; INSTABILITY; LASERS; ORIGIN; OSCILLATIONS; PULSE SHAPERS; PULSES; PUMPS; QUANTUM DOTS