Ultrafast dephasing of Resorufin in d-ethanol glass from 17 to 40 K studied by incoherent photon echo

Gruzdev, N.V.; Silkis, E. G.; Titov, V. D.; Vainer, Yu. G.

doi:10.1364/josab.9.000941

Cited by 18 publications

(5 citation statements)

References 14 publications

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“…IPE experiments and three beams PE experiments, performed on chromophores embedded in amorphous matrices at low temperature, show a behavior similar to the one we observe in our measurments [14][15][16][17]27]. They also attribute the same physical meaning to the different components present in the decaying signal.…”

Section: -Results and Discussionsupporting

confidence: 86%

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Photon echo experiments on 3–3′ diethylthiacarbocyanine in glass-forming liquids with ultrafast laser pulses

Ferrante

1998

Nouv Cim D

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Photon echo experiments on diethylthiacarbocyanine iodide (DTCI) in dibuthylphthalate (DBP) and glycerol in the glass phase with femtosecond pulses are presented. The PE signal shows nonexponential decays even at low temperatures. This behavior is attributed to the many vibronic resonances of the chromophore/ glass system which can be simultaneously excited by the spectral bandwith of the laser pulses. We are able to extract from the PE decays the contribution of the homogeneous dephasing rate of the 0-0 transition of DTCI up to 20 K in dibutylphthalate and 40 K in glycerol. A beating structure in the echo decay for the system DTCI/DBP is also observed from 8 K up to 180 K (glass transition temperature for DBP). This feature is attributed to an intereference process involving excitation of a vibronic transition of DTCI characterized by a vibrational frequency of 300 cm 21 .

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Section: -Results and Discussionsupporting

confidence: 86%

“…The IPE experiments were able to determine the homogeneous dephasing rate of the 0-0 electronic transition of the chromophore up to temperatures of 100 K in polymers [15,16], and of 30 K in ethanol [14].…”

Section: -Introductionmentioning

confidence: 99%

Photon echo experiments on 3–3′ diethylthiacarbocyanine in glass-forming liquids with ultrafast laser pulses

Ferrante

1998

Nouv Cim D

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“…Both PE setups were described previously 33,[36][37][38] and only some of the main parameters will be noted here. The 2PE setup is based on a synchronously pumped and cavitydumped picosecond dye laser yielding a time resolution of 6 ps.…”

Section: Methodsmentioning

confidence: 99%

Comparison of photon echo, hole burning, and single molecule spectroscopy data on low-temperature dynamics of organic amorphous solids

Zilker

Kador

Friebel

et al. 1998

The Journal of Chemical Physics

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A joint analysis of spectroscopic data obtained at liquid–helium temperatures by three line-narrowing techniques, photon echo (PE), persistent hole burning (HB), and single molecule spectroscopy (SMS), is presented. Two polymer systems, polyisobutylene (PIB) and polymethylmethacrylate (PMMA), doped with tetra-tert-butylterrylene (TBT) were studied via PE and HB techniques and the results are compared with literature data [R. Kettner et al., J. Phys. Chem. 98, 6671 (1994); B. Kozankiewicz et al., J. Chem. Phys. 101, 9377 (1994)] obtained by SMS. Both systems behave quite differently. In TBT/PIB a rather strong influence of a dispersion of the dephasing time T2 was found which plays only a minor role in TBT/PMMA. We have also measured the temperature dependence of T2 for both systems in a broad temperature range (0.4–22 K). Using these data we separated the two different contributions to the optical dephasing — due to an interaction with two-level systems and due to coupling with local low-frequency modes. The data are compared with calculations using a numerical and a semianalytical model in the presence of a large dispersion of the single molecule parameters. Furthermore, we discuss the differences of the linewidths as measured by different experimental methods.

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“…The matrix elements are calculated employing the effective orbital quantum number approximation [30] for the wavefunctions of the excited n -electron. In many cases the wavefunctions of this type provide quite a good approximation to the real wavefunctions and substantially simplify numerical calculations [31].…”

Section: Modified Fermi Pseudopotential Methods (Mfp)mentioning

confidence: 99%

Optical transitions in excited alkali + rare-gas collision molecules and related interatomic potentials:

Behmenburg

Makonnen

Kaiser

et al. 1996

J. Phys. B: At. Mol. Opt. Phys.

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A comparison is made of experimental far-wing profiles for the system Li(2P → 3D)He with quantum calculations of thermally averaged free-free continua. Using input adiabatic potentials and transition moment functions from both ab initio and semi-empirical approaches, the comparison shows: (i) new ab initio potentials for Li * (2P, 3P, 3D)He reproduce the spectral positions of the observed rainbow satellites well; the height of the 3D barrier predicted agrees with experiment to within ±15 cm −1 , whereas its position is too large by 0.3 a 0 ; (ii) potentials obtained with various semi-empirical methods reproduce the satellite structure qualitatively, but are generally too repulsive in the 3D state at intermediate and large internuclear separations; (iii) transition moment functions for the asymptotically forbidden 2P → 3P transitions reproduce, with different degrees of accuracy, the intensity of the red-wing satellite related to the 3P potential extremum around 12 a 0 . The vibrational energies in the 2P and 3D states calculated with the ab initio potentials reproduce to within a few cm −1 those obtained from rotationally resolved band spectra reported in the literature.

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Ultrafast dephasing of Resorufin in d-ethanol glass from 17 to 40 K studied by incoherent photon echo

Cited by 18 publications

References 14 publications

Photon echo experiments on 3–3′ diethylthiacarbocyanine in glass-forming liquids with ultrafast laser pulses

Photon echo experiments on 3–3′ diethylthiacarbocyanine in glass-forming liquids with ultrafast laser pulses

Comparison of photon echo, hole burning, and single molecule spectroscopy data on low-temperature dynamics of organic amorphous solids

Optical transitions in excited alkali + rare-gas collision molecules and related interatomic potentials:

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