Ultrafast exciton recombination in PbS quantum dots

V. G. Savitski, N. N. Posnov, A. M. Malyarevich, K. V. Yumashev, A. A. Lipovskii

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Bleaching relaxation in PbS-quantum-dots-doped phosphate glasses in dependence on the dot size is presented. The fast bleaching decay component is increased from 14 to 93 ps as the dot size increased from 4.7 to 5.8 nm. The glasses are employed as saturable absorbers for mode-locking and Q-switching of 1.3 μm neodymium lasers. Q-switched pulses of 120 ns (0.1 μJ) in duration (energy) and the average output power of 3 mW from diode-pumped Nd 3+:KGW laser and ultrashort pulses of maximum 250 μJ in energy and 150 ps in duration from a Nd3+:YAP laser were obtained.

Original languageEnglish
Pages (from-to)372-375
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5036
DOIs
Publication statusPublished - 1 Dec 2002
EventPhotonics, Devices, and Systems II - Prague, Czech Republic
Duration: 26 May 200229 May 2002

Keywords

  • mode-locking
  • PbS
  • Q-switching
  • quantum dots
  • bleaching
  • excitons
  • laser mode locking
  • laser pulses
  • Neodymium lasers
  • Phosphates
  • Q switched lasers
  • semiconducting lead compounds
  • semiconductor doping
  • semiconductor quantum dots

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  • Cite this

    Savitski, V. G., Posnov, N. N., Malyarevich, A. M., Yumashev, K. V., & Lipovskii, A. A. (2002). Ultrafast exciton recombination in PbS quantum dots. Proceedings of SPIE - The International Society for Optical Engineering, 5036, 372-375. https://doi.org/10.1117/12.498356