Geodesic
Ultrafast Optical Dephasing in Doped Polymethylmetacrylate: Research by Means of Incoherent Photon Echo with Femtosecond Temporal Resolution.
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 150 (2008) no. 2, pp. 148-159 Cet article a éte moissonné depuis la source Math-Net.Ru

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The article describes a unique experimental arrangement based on broadband dye-laser, which allows to investigate ultrafast optical defasing processes in condenced matter with femtosecond (20–30 fs) time resolution by means of incoherent photon echo. The main advantages of this method are: a) femtosecond laser technique not being used; b) realization of “soft” sample excitation mode. The experimental results of ultrafast phase relaxation processes research performed by means of four-wave mixing technique in amorphous polymethylmethacrylate doped with rhodamine-101 molecules at room temperature are presented.
Mots-clés : photon echo
Keywords: incoherent echo, broadband laser, optical dephasing, femtosecond relaxation, four-wave mixing, amorphous medium. 
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     author = {K. R. Karimullin and Yu. G. Vainer and I. Yu. Eremchev and V. V. Samartsev},
     title = {Ultrafast {Optical} {Dephasing} in {Doped} {Polymethylmetacrylate:} {Research} by {Means} of {Incoherent} {Photon} {Echo} with {Femtosecond} {Temporal} {Resolution.}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {148--159},
     year = {2008},
     volume = {150},
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K. R. Karimullin; Yu. G. Vainer; I. Yu. Eremchev; V. V. Samartsev. Ultrafast Optical Dephasing in Doped Polymethylmetacrylate: Research by Means of Incoherent Photon Echo with Femtosecond Temporal Resolution.. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 150 (2008) no. 2, pp. 148-159. http://geodesic.mathdoc.fr/item/UZKU_2008_150_2_a20/

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