Picosecond nonlinear spectroscopy of quantum-size PbTe films

A. G. Kornienko; V. M. Petnikova; Vladimir V. Shuvalov; Ludmila N. Vereshchagina; Alexander N. Zherikhin

doi:10.1117/12.242138

10 June 1996 Picosecond nonlinear spectroscopy of quantum-size PbTe films

A. G. Kornienko, V. M. Petnikova, Vladimir V. Shuvalov, Ludmila N. Vereshchagina, Alexander N. Zherikhin

Proceedings Volume 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials; (1996) https://doi.org/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.

Citation Download Citation

A. G. Kornienko, V. M. Petnikova, Vladimir V. Shuvalov, Ludmila N. Vereshchagina, and 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); https://doi.org/10.1117/12.242138

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