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Low-loss quantum-dot-based saturable absorber for efficient femtosecond pulse generation

Low-loss quantum-dot-based saturable absorber for efficient femtosecond pulse generation

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Authors

  • A. A. Lagatsky
  • F. M. Bain
  • C. T. A. Brown
  • W. Sibbett
  • D. A. Livshits
  • G. Erbert
  • E. U. Rafailov

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Original languageEnglish
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Pages-
Number of pages3
JournalApplied Physics Letters
Journal publication date3 Dec 2007
Journal number23
Volume91
DOIs
StatePublished

Abstract

We report the efficient generation of femtosecond pulses from a diode-pumped solid-state laser that has been passively mode locked using a quantum-dot-based saturable absorber. Average output powers up to 1.15 W and transform-limited pulses as short as 114 fs were obtained around 1040 nm with a pulse repetition frequency of 107 MHz from a diode-pumped Yb3+:KY(WO4)(2) laser. The InGaAs quantum-dot saturable absorber was characterized to have a saturation fluence of 25 mu J/cm(2) and nonsaturable losses of less than 0.2% with an initial low-signal absorption of 2.5% at 1040 nm.

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