Continuous-wave two-photon excitation of individual CdS nanocrystallites

A. M.  van Oijen; R. Verberk; Y. Durand; J. Schmidt; J. N. J.  van Lingen; A. A. Bol; A. Meijerink

doi:10.1063/1.1391231

Continuous-wave two-photon excitation of individual CdS nanocrystallites

A. M. van Oijen, R. Verberk, Y. Durand, J. Schmidt, J. N. J. van Lingen, A. A. Bol, A. Meijerink

Zernike Institute for Advanced Materials

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Abstract

By use of low-temperature confocal microscopy, continuous-wave two-photon fluorescence images are obtained of individual CdS nanocrystallites embedded in a polymer matrix. The quadratic dependence of the emission rate on the applied laser power proves that the observed fluorescence originates from the simultaneous absorption of two photons. From the experimental data the two-photon absorption cross-section σ(2) could be determined, resulting in a value smaller than that known from literature. The work presented is a first step towards high-resolution fluorescence-excitation spectroscopy on the electronic states in the band edge, inaccessible by conventional one-photon spectroscopy.

Original language	English
Pages (from-to)	830-832
Number of pages	3
Journal	Applied Physics Letters
Volume	79
Issue number	6
DOIs	https://doi.org/10.1063/1.1391231
Publication status	Published - 2001

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@article{938116c091d7489da599bc6c73836e29,

title = "Continuous-wave two-photon excitation of individual CdS nanocrystallites",

abstract = "By use of low-temperature confocal microscopy, continuous-wave two-photon fluorescence images are obtained of individual CdS nanocrystallites embedded in a polymer matrix. The quadratic dependence of the emission rate on the applied laser power proves that the observed fluorescence originates from the simultaneous absorption of two photons. From the experimental data the two-photon absorption cross-section σ(2) could be determined, resulting in a value smaller than that known from literature. The work presented is a first step towards high-resolution fluorescence-excitation spectroscopy on the electronic states in the band edge, inaccessible by conventional one-photon spectroscopy.",

author = "{van Oijen}, {A. M.} and R. Verberk and Y. Durand and J. Schmidt and {van Lingen}, {J. N. J.} and Bol, {A. A.} and A. Meijerink",

note = "Relation: http://www.rug.nl/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials",

year = "2001",

doi = "10.1063/1.1391231",

language = "English",

volume = "79",

pages = "830--832",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "6",

}

TY - JOUR

T1 - Continuous-wave two-photon excitation of individual CdS nanocrystallites

AU - van Oijen, A. M.

AU - Verberk, R.

AU - Durand, Y.

AU - Schmidt, J.

AU - van Lingen, J. N. J.

AU - Bol, A. A.

AU - Meijerink, A.

N1 - Relation: http://www.rug.nl/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials

PY - 2001

Y1 - 2001

N2 - By use of low-temperature confocal microscopy, continuous-wave two-photon fluorescence images are obtained of individual CdS nanocrystallites embedded in a polymer matrix. The quadratic dependence of the emission rate on the applied laser power proves that the observed fluorescence originates from the simultaneous absorption of two photons. From the experimental data the two-photon absorption cross-section σ(2) could be determined, resulting in a value smaller than that known from literature. The work presented is a first step towards high-resolution fluorescence-excitation spectroscopy on the electronic states in the band edge, inaccessible by conventional one-photon spectroscopy.

AB - By use of low-temperature confocal microscopy, continuous-wave two-photon fluorescence images are obtained of individual CdS nanocrystallites embedded in a polymer matrix. The quadratic dependence of the emission rate on the applied laser power proves that the observed fluorescence originates from the simultaneous absorption of two photons. From the experimental data the two-photon absorption cross-section σ(2) could be determined, resulting in a value smaller than that known from literature. The work presented is a first step towards high-resolution fluorescence-excitation spectroscopy on the electronic states in the band edge, inaccessible by conventional one-photon spectroscopy.

U2 - 10.1063/1.1391231

DO - 10.1063/1.1391231

M3 - Article

SN - 0003-6951

VL - 79

SP - 830

EP - 832

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

ER -

Continuous-wave two-photon excitation of individual CdS nanocrystallites

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