Spin dynamics in nonlinear optical spectroscopy of Fermi sea systems

Tigran V. Shahbazyan; Ilias E. Perakis; Mikhail E. Raikh

doi:10.1117/12.424733

23 April 2001 Spin dynamics in nonlinear optical spectroscopy of Fermi sea systems

Tigran V. Shahbazyan, Ilias E. Perakis, Mikhail E. Raikh

Proceedings Volume 4280, Ultrafast Phenomena in Semiconductors V; (2001) https://doi.org/10.1117/12.424733
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

We discuss the role of many-body spin correlations in nonlinear optical response of a Fermi sea system with a deep impurity level. Due to the Hubbard repulsion between electrons at the impurity, the optical transitions between the impurity level and the Fermi sea states lead to an optically-induced Kondo effect. In particular, the third- order nonlinear optical susceptibility logarithmically diverges at the absorption threshold. The shape of the pump- probe spectrum is governed by the light-induced Kondo temperature, which can be tuned by varying the intensity and frequency of the pump optical field. In the Kondo limit, corresponding to off-resonant pump excitation, the nonlinear absorption spectrum exhibits a narrow peak below the linear absorption onset.

Citation Download Citation

Tigran V. Shahbazyan, Ilias E. Perakis, and Mikhail E. Raikh "Spin dynamics in nonlinear optical spectroscopy of Fermi sea systems", Proc. SPIE 4280, Ultrafast Phenomena in Semiconductors V, (23 April 2001); https://doi.org/10.1117/12.424733

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