Diode laser stark spectroscopy on the persistent holes

The Stark effect on the hole-burning spectra of Zn- and Mg-phthalocyanine (Zn-, Mg-PhC) in polyvinylbutyral (PVB) films at 4.2 K have been measured using a tunable diode laser technique in the visible region. Simultaneously, with a linear Stark effect, a quadratic effect was also recorded. From comp...

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Bibliographic Details
Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 1999-09, Vol.55 (10), p.2015-2020
Main Authors: Ulitsky, N.I., Snegirev, E.P., Khodykin, O.V., Personov, R.I.
Format: Article
Language:English
Subjects:
Diode laser spectroscopy
Polymer
Spectral hole burning
Stark effect: Phthalocyanine
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Summary:The Stark effect on the hole-burning spectra of Zn- and Mg-phthalocyanine (Zn-, Mg-PhC) in polyvinylbutyral (PVB) films at 4.2 K have been measured using a tunable diode laser technique in the visible region. Simultaneously, with a linear Stark effect, a quadratic effect was also recorded. From comparison of the experimental data with the results of model calculations, the Stark parameters for both systems and a value of the internal electric field in polymer matrix were deduced. For Zn-PhC in PVB, we obtained average values of the induced dipole moment difference between ground and excited states: Δ μ ind=0.105 D; the polarizability tensor difference: Δ α=62 Å 3; average local field value: E i =7×10 5 V cm −1. For Mg-PhC in PVB: Δ μ ind=0.095 D, Δ α=50 Å 3 and E i =6.5×10 5 V cm −1.
ISSN:1386-1425
DOI:10.1016/S1386-1425(99)00073-6