Paper
7 February 2006 Microscopic model of transient Kerr birefringence and self-focusing in bulk dielectrics: dynamic Franz-Keldysh bandgap renormalization
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Abstract
Coherent band spectrum renormalization in dielectrics by a strong anisotropic electric field of intense laser pulses is considered in terms of dynamic Franz-Keldysh effect (DFKE). Comparing to permanent DFKE shifts of center-zone (Γ-point) non-degenerate band extrema, DFKE band spectrum renormalization of degenerate center-zone and zone-edge band extrema occurs as their simultaneous shifts and splitting. Theory-group analysis is invoked to construct the DFKE Hamiltonian for typical dispersion curves of valence and conduction bands in dielectric materials.
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Sergey I. Kudryashov "Microscopic model of transient Kerr birefringence and self-focusing in bulk dielectrics: dynamic Franz-Keldysh bandgap renormalization", Proc. SPIE 5991, Laser-Induced Damage in Optical Materials: 2005, 599110 (7 February 2006); https://doi.org/10.1117/12.638606
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KEYWORDS
Dielectrics

Scattering

Ionization

Laser scattering

Birefringence

Femtosecond phenomena

Solids

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