Ultrafast exciton recombination in PbS quantum dots

V. G. Savitski; N. N. Posnov; Alexander M. Malyarevich; Konstantin V. Yumashev; Andrey A. Lipovskii

doi:10.1117/12.498356

8 July 2003 Ultrafast exciton recombination in PbS quantum dots

V. G. Savitski, N. N. Posnov, Alexander M. Malyarevich, Konstantin V. Yumashev, Andrey A. Lipovskii

Proceedings Volume 5036, Photonics, Devices, and Systems II; (2003) https://doi.org/10.1117/12.498356
Event: Photonics, Devices, and Systems II, 2002, Prague, Czech Republic

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 Nd³⁺:KGW laser and ultrashort pulses of maximum 250 µJ in energy and 150 ps in duration from a Nd³⁺:YAP laser were obtained.

Citation Download Citation

V. G. Savitski, N. N. Posnov, Alexander M. Malyarevich, Konstantin V. Yumashev, and Andrey A. Lipovskii "Ultrafast exciton recombination in PbS quantum dots", Proc. SPIE 5036, Photonics, Devices, and Systems II, (8 July 2003); https://doi.org/10.1117/12.498356

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