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