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Trapped electronic states in YAG crystal excited by femtosecond radiation

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Abstract

The excitation of an electronic subsystem of an yttrium aluminum garnet by 800 nm femtosecond radiation was studied theoretically and experimentally. The spatio-temporal dynamics of the refractive index (n) inside the beam waist was explored by means of the pump–probe interferometric technique with a submicron resolution. The observed increase in n indicated the formation of bound electronic states relaxed for \({\sim}150\) ps. We showed that the experimental data agreed with the computational simulation based on the numerical solution of the nonlinear Schrödinger equation only if these transient states were considered to arise from a direct light-induced process but not from the decay of radiatively generated free-electron–hole pairs.

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Authors and Affiliations

  1. General Physics Institute of RAS, Moscow, Russia

    E. V. Zavedeev, V. V. Kononenko & V. I. Konov

  2. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia

    E. V. Zavedeev, V. V. Kononenko & V. I. Konov

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  1. E. V. Zavedeev
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  2. V. V. Kononenko
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  3. V. I. Konov
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Correspondence to V. V. Kononenko.

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Zavedeev, E.V., Kononenko, V.V. & Konov, V.I. Trapped electronic states in YAG crystal excited by femtosecond radiation. Appl. Phys. A 123, 499 (2017). https://doi.org/10.1007/s00339-017-1114-z

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