10 June 1996 Picosecond nonlinear spectroscopy of quantum-size PbTe films
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Proceedings Volume 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials; (1996); doi: 10.1117/12.242138
Event: International Conference on Coherent and Nonlinear Optics, 1995, St. Petersburg, Russian Federation
Abstract
We propose new and promising technique for studying quantum- size structures. We tested this technique based on optical two-photon excitation and probing of renormalized electron spectrum in our investigation of monocrystalline PbTe films. We revealed sharp dependence of spectral position of two- photon resonances versus film thickness L equals 6, 18, and 30 nm. Our theoretical model explained this result by taking into account Pb Te band structure, electron-electron and electron-phonon interactions, and redistribution of charge carriers due to inter- and intraband processes. Estimation T2 >= 300 fs for decay time of interband polarization was obtained.
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A. G. Kornienko, V. M. Petnikova, Vladimir V. Shuvalov, Ludmila N. Vereshchagina, Alexander N. Zherikhin, "Picosecond nonlinear spectroscopy of quantum-size PbTe films", Proc. SPIE 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials, (10 June 1996); doi: 10.1117/12.242138; http://dx.doi.org/10.1117/12.242138
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KEYWORDS
Phonons

Spectroscopy

Picosecond phenomena

Polarization

Semiconductors

Hole burning spectroscopy

Nonlinear response

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