Nonlinear spectroscopy of PbS quantum-dot-doped glasses as saturable absorbers for the mode locking of solid-state lasers

A. M. Malyarevich; M. S. Gaponenko; K. V. Yumashev; A. A. Lagatsky; W. Sibbett; A. A. Zhilin; A. A. Lipovskii

doi:10.1063/1.2215353

Nonlinear spectroscopy of PbS quantum-dot-doped glasses as saturable absorbers for the mode locking of solid-state lasers

A. M. Malyarevich, M. S. Gaponenko, K. V. Yumashev, A. A. Lagatsky, W. Sibbett, A. A. Zhilin, A. A. Lipovskii

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The bleaching relaxation characteristics of PbS quantum dots with diameters in the range of 3.8-4.3 nm synthesized in silicate and phosphate glasses have been studied under the conditions of femtosecond excitation. It has been observed that increase of pump fluence from 0.1 to 2.2 mJ/cm(2) leads to the appearance of a second (slow) component in the bleaching relaxation kinetics and to the shortening of both the fast (from several tens of picoseconds to several picoseconds) and slow relaxation times. An absorption saturation fluence of approximate to 15 mu J/cm(2) with a nonsaturable absorption coefficient of 2.5-3 cm(-1) at 1.05 mu m has been evaluated for the PbS quantum-dot-doped glasses studied. The nature of the nonsaturable absorption and the mechanism of the bleaching relaxation in PbS quantum dots have been discussed. (c) 2006 American Institute of Physics.

Original language	English
Article number	023108
Number of pages	5
Journal	Journal of Applied Physics
Volume	100
Issue number	2
DOIs	https://doi.org/10.1063/1.2215353
Publication status	Published - 15 Jul 2006

Keywords

NEODYMIUM LASERS
RELAXATION

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10.1063/1.2215353

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title = "Nonlinear spectroscopy of PbS quantum-dot-doped glasses as saturable absorbers for the mode locking of solid-state lasers",

abstract = "The bleaching relaxation characteristics of PbS quantum dots with diameters in the range of 3.8-4.3 nm synthesized in silicate and phosphate glasses have been studied under the conditions of femtosecond excitation. It has been observed that increase of pump fluence from 0.1 to 2.2 mJ/cm(2) leads to the appearance of a second (slow) component in the bleaching relaxation kinetics and to the shortening of both the fast (from several tens of picoseconds to several picoseconds) and slow relaxation times. An absorption saturation fluence of approximate to 15 mu J/cm(2) with a nonsaturable absorption coefficient of 2.5-3 cm(-1) at 1.05 mu m has been evaluated for the PbS quantum-dot-doped glasses studied. The nature of the nonsaturable absorption and the mechanism of the bleaching relaxation in PbS quantum dots have been discussed. (c) 2006 American Institute of Physics.",

keywords = "NEODYMIUM LASERS, RELAXATION",

author = "Malyarevich, {A. M.} and Gaponenko, {M. S.} and Yumashev, {K. V.} and Lagatsky, {A. A.} and W. Sibbett and Zhilin, {A. A.} and Lipovskii, {A. A.}",

year = "2006",

month = jul,

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doi = "10.1063/1.2215353",

language = "English",

volume = "100",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

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T1 - Nonlinear spectroscopy of PbS quantum-dot-doped glasses as saturable absorbers for the mode locking of solid-state lasers

AU - Malyarevich, A. M.

AU - Gaponenko, M. S.

AU - Yumashev, K. V.

AU - Lagatsky, A. A.

AU - Sibbett, W.

AU - Zhilin, A. A.

AU - Lipovskii, A. A.

PY - 2006/7/15

Y1 - 2006/7/15

N2 - The bleaching relaxation characteristics of PbS quantum dots with diameters in the range of 3.8-4.3 nm synthesized in silicate and phosphate glasses have been studied under the conditions of femtosecond excitation. It has been observed that increase of pump fluence from 0.1 to 2.2 mJ/cm(2) leads to the appearance of a second (slow) component in the bleaching relaxation kinetics and to the shortening of both the fast (from several tens of picoseconds to several picoseconds) and slow relaxation times. An absorption saturation fluence of approximate to 15 mu J/cm(2) with a nonsaturable absorption coefficient of 2.5-3 cm(-1) at 1.05 mu m has been evaluated for the PbS quantum-dot-doped glasses studied. The nature of the nonsaturable absorption and the mechanism of the bleaching relaxation in PbS quantum dots have been discussed. (c) 2006 American Institute of Physics.

AB - The bleaching relaxation characteristics of PbS quantum dots with diameters in the range of 3.8-4.3 nm synthesized in silicate and phosphate glasses have been studied under the conditions of femtosecond excitation. It has been observed that increase of pump fluence from 0.1 to 2.2 mJ/cm(2) leads to the appearance of a second (slow) component in the bleaching relaxation kinetics and to the shortening of both the fast (from several tens of picoseconds to several picoseconds) and slow relaxation times. An absorption saturation fluence of approximate to 15 mu J/cm(2) with a nonsaturable absorption coefficient of 2.5-3 cm(-1) at 1.05 mu m has been evaluated for the PbS quantum-dot-doped glasses studied. The nature of the nonsaturable absorption and the mechanism of the bleaching relaxation in PbS quantum dots have been discussed. (c) 2006 American Institute of Physics.

KW - NEODYMIUM LASERS

KW - RELAXATION

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DO - 10.1063/1.2215353

M3 - Article

SN - 0021-8979

VL - 100

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 2

M1 - 023108

ER -

Nonlinear spectroscopy of PbS quantum-dot-doped glasses as saturable absorbers for the mode locking of solid-state lasers

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