Two-photon fluorescence microscopy of single semiconductor quantum rods: Direct observation of highly polarized nonlinear absorption dipole

Eli Rothenberg; Yuval Ebenstein; Miri Kazes; Uri Banin

doi:10.1021/jp037978d

Two-photon fluorescence microscopy of single semiconductor quantum rods: Direct observation of highly polarized nonlinear absorption dipole

Eli Rothenberg, Yuval Ebenstein, Miri Kazes, Uri Banin^*

^*Corresponding author for this work

Institute of Chemistry

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

45 Scopus citations

Abstract

Two-photon polarization fluorescence microscopy is used to study the nature of the emission and nonlinear absorption dipole of single CdSe/ZnS quantum rods. Rods showed strongly polarized nonlinear excitation with sharp angular dependence, following a cos⁴(φ) functional form, in agreement with the predicted two-photon absorption process. The two-photon absorption is parallel to the emission polarization and allows high orientation selectivity in excitation to be achieved. This further demonstrates the role of single molecule measurements in unraveling basic principles of light-matter interactions otherwise masked by ensemble averaging.

Original language	English
Pages (from-to)	2797-2800
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	9
DOIs	https://doi.org/10.1021/jp037978d
State	Published - 4 Mar 2004

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abstract = "Two-photon polarization fluorescence microscopy is used to study the nature of the emission and nonlinear absorption dipole of single CdSe/ZnS quantum rods. Rods showed strongly polarized nonlinear excitation with sharp angular dependence, following a cos4(φ) functional form, in agreement with the predicted two-photon absorption process. The two-photon absorption is parallel to the emission polarization and allows high orientation selectivity in excitation to be achieved. This further demonstrates the role of single molecule measurements in unraveling basic principles of light-matter interactions otherwise masked by ensemble averaging.",

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AU - Rothenberg, Eli

AU - Ebenstein, Yuval

AU - Kazes, Miri

AU - Banin, Uri

PY - 2004/3/4

Y1 - 2004/3/4

N2 - Two-photon polarization fluorescence microscopy is used to study the nature of the emission and nonlinear absorption dipole of single CdSe/ZnS quantum rods. Rods showed strongly polarized nonlinear excitation with sharp angular dependence, following a cos4(φ) functional form, in agreement with the predicted two-photon absorption process. The two-photon absorption is parallel to the emission polarization and allows high orientation selectivity in excitation to be achieved. This further demonstrates the role of single molecule measurements in unraveling basic principles of light-matter interactions otherwise masked by ensemble averaging.

AB - Two-photon polarization fluorescence microscopy is used to study the nature of the emission and nonlinear absorption dipole of single CdSe/ZnS quantum rods. Rods showed strongly polarized nonlinear excitation with sharp angular dependence, following a cos4(φ) functional form, in agreement with the predicted two-photon absorption process. The two-photon absorption is parallel to the emission polarization and allows high orientation selectivity in excitation to be achieved. This further demonstrates the role of single molecule measurements in unraveling basic principles of light-matter interactions otherwise masked by ensemble averaging.

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JO - Journal of Physical Chemistry B

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Two-photon fluorescence microscopy of single semiconductor quantum rods: Direct observation of highly polarized nonlinear absorption dipole

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