Femtosecond photon echo spectroscopy in single laser shot

Rebane, A.; Gallus, J.; Ollikainen, O. (2002). Femtosecond photon echo spectroscopy in single laser shot. Laser Physics, 12 (8), 1126-1134.
ajakirjaartikkel
Rebane, A.; Gallus, J.; Ollikainen, O.
Laser Physics
1054-660X
12
8
2002
1126-1134
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, We take advantage of extreme spatial thinness of 100-femtosecond pulse of an amplified femtosecond laser and measure for the first time the homogeneous spectrum of a strongly inhomogeneously-broadened solid with a single laser shot. This is achieved by combining causality-related diffraction asymmetry of two- and three-pulse photon echo with oblique excitation pulse wave fronts, which are creating a space-variable time delay. We show that by focussing the resulting photon echo image with a Fourier-transforming lens, we can directly record the autocorrelation function of the homogeneous spectrum. We measure the homogeneous line shape of dye-doped polymer at different temperatures, with spectral resolution up to 0.2 cm(-1), such that each measurement requires only one single laser pulse.
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