Femtosecond fluorescence depletion spectroscopy of NO2 multiphoton dissociation dynamics

R. B. López-Martens; T. W. Schmidt; G. Roberts

doi:10.1063/1.480046

Femtosecond fluorescence depletion spectroscopy of NO₂ multiphoton dissociation dynamics

R. B. López-Martens
, T. W. Schmidt
, G. Roberts

University of Cambridge

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

Abstract

Two-color femtosecond pump-probe spectroscopy has been applied to the multiphoton dissociation of NO₂ with a time resolution of ≤350 fs. At laser intensities in the range ≃3 × 10¹²-2 × 10¹³ W cm^-2 and a wavelength of 400 nm, NO₂ absorbs three photons before dissociation. Nascent NO A ²Σ⁺ product in its n′ = 0 and 1 vibrational levels is probed by single-photon fluorescence depletion at 800 nm. Analyses of the ultrafast transient behavior at different intensities leads to an estimate of ≃600 fs for formation of NO A ²Σ⁺ n′ = 0 and 1.

Original language	English
Pages (from-to)	7183-7186
Number of pages	4
Journal	Journal of Chemical Physics
Volume	111
Issue number	16
DOIs	https://doi.org/10.1063/1.480046
Publication status	Published - 22 Oct 1999
Externally published	Yes

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title = "Femtosecond fluorescence depletion spectroscopy of NO2 multiphoton dissociation dynamics",

abstract = "Two-color femtosecond pump-probe spectroscopy has been applied to the multiphoton dissociation of NO2 with a time resolution of ≤350 fs. At laser intensities in the range ≃3 × 1012-2 × 1013 W cm-2 and a wavelength of 400 nm, NO2 absorbs three photons before dissociation. Nascent NO A 2Σ+ product in its n′ = 0 and 1 vibrational levels is probed by single-photon fluorescence depletion at 800 nm. Analyses of the ultrafast transient behavior at different intensities leads to an estimate of ≃600 fs for formation of NO A 2Σ+ n′ = 0 and 1.",

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year = "1999",

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AU - López-Martens, R. B.

AU - Schmidt, T. W.

AU - Roberts, G.

PY - 1999/10/22

Y1 - 1999/10/22

N2 - Two-color femtosecond pump-probe spectroscopy has been applied to the multiphoton dissociation of NO2 with a time resolution of ≤350 fs. At laser intensities in the range ≃3 × 1012-2 × 1013 W cm-2 and a wavelength of 400 nm, NO2 absorbs three photons before dissociation. Nascent NO A 2Σ+ product in its n′ = 0 and 1 vibrational levels is probed by single-photon fluorescence depletion at 800 nm. Analyses of the ultrafast transient behavior at different intensities leads to an estimate of ≃600 fs for formation of NO A 2Σ+ n′ = 0 and 1.

AB - Two-color femtosecond pump-probe spectroscopy has been applied to the multiphoton dissociation of NO2 with a time resolution of ≤350 fs. At laser intensities in the range ≃3 × 1012-2 × 1013 W cm-2 and a wavelength of 400 nm, NO2 absorbs three photons before dissociation. Nascent NO A 2Σ+ product in its n′ = 0 and 1 vibrational levels is probed by single-photon fluorescence depletion at 800 nm. Analyses of the ultrafast transient behavior at different intensities leads to an estimate of ≃600 fs for formation of NO A 2Σ+ n′ = 0 and 1.

U2 - 10.1063/1.480046

DO - 10.1063/1.480046

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VL - 111

SP - 7183

EP - 7186

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 16

ER -

Femtosecond fluorescence depletion spectroscopy of NO2 multiphoton dissociation dynamics

Abstract

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Femtosecond fluorescence depletion spectroscopy of NO₂ multiphoton dissociation dynamics