Spatial and spectral properties of nonequilibrium population gratings induced in a resonant medium by femtosecond pulses

Zuikov, V. A.; Kalachev, A. A.; Samartsev, V. V.; Negrashov, I. V.; Rebane, A. K.; Gallus, I.; Ollikainen, O.; Wild, U. P. (2000). Spatial and spectral properties of nonequilibrium population gratings induced in a resonant medium by femtosecond pulses. Laser Physics, 10 (1), 368−371.
ajakirjaartikkel
Zuikov, V. A.; Kalachev, A. A.; Samartsev, V. V.; Negrashov, I. V.; Rebane, A. K.; Gallus, I.; Ollikainen, O.; Wild, U. P.
  • Inglise
Laser Phys.
Laser Physics
1555-6611
1054-660X
10
1
2000
368371
Ilmunud
1.1. Teadusartiklid, mis on kajastatud Web of Science andmebaasides Science Citation Index Expanded, Social Sciences Citation Index, Arts & Humanities Citation Index ja/või andmebaasis Scopus (v.a. kogumikud)
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English, Spatial and spectral properties of nonequilibrium population gratings induced in doped polymer films and crystal silicon by femtosecond laser pulses are experimentally investigated. These experimental studies reveal a red shift of self-diffraction spectra with the increase in the angle between the wave vectors of the pulses inducing gratings in above-specified resonant media at room temperature. A model attributing this spectral shift to the role of phonons in the self-diffraction process is discussed.
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