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Title: Ground-state modulation-enhancement by two-state lasing in quantum-dot laser devices

We predict a significant increase of the 3 dB-cutoff-frequency on the ground-state lasing wavelength for two-state-lasing quantum-dot lasers using a microscopically motivated multi-level rate-equation model. After the onset of the second lasing line, the excited state acts as a high-pass filter, improving the ground-state response to faster modulation frequencies. We present both numerically simulated small-signal and large-signal modulation results and compare the performance of single and two-state lasing devices. Furthermore, we give dynamical arguments for the advantages of two-state lasing on data-transmission capabilities.
Authors:
;  [1] ;  [2]
  1. Institut für Theoretische Physik, Technische Universität Berlin, 10623 Berlin (Germany)
  2. Fachbereich Physik, Freie Universität Berlin, 14195 Berlin (Germany)
Publication Date:
OSTI Identifier:
22399030
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; DATA TRANSMISSION; EXCITED STATES; FILTERS; GROUND STATES; LASERS; MODULATION; PERFORMANCE; QUANTUM DOTS; REACTION KINETICS; WAVELENGTHS