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P-i-n junction quantum dot saturable absorber mirror

P-i-n junction quantum dot saturable absorber mirror: Electrical control of ultrafast dynamics

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  • S.A. Zolotovskaya
  • M. Butkus
  • E.U. Rafailov
  • R. Häring
  • A. Able
  • W. Kaenders
  • I.L. Krestnikov
  • D.A. Livshits

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Original languageEnglish
Pages (from-to)9038-9045
Number of pages8
JournalOptics Express
Issue number8
StatePublished - 9 Apr 2012


We report on nonlinear optical properties of a p-i-n junction quantum dot saturable absorber based on InGaAs/GaAs. Absorption recovery dynamics and nonlinear reflectivity are investigated for different reverse bias and pump power conditions. A decrease in absorption recovery time of nearly two orders of magnitude is demonstrated by applying a voltage between 0 and-20 V. The saturable absorber modulation depth and saturation fluence are found to be independent from the applied reverse bias.



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