Photoimaging of the multiple filamentation of femtosecond laser pulses in poly(methyl methacrylate) doped with 2,2-difluoro-4-(9-anthracyl)-6-methyl-1,3,2-dioxaborine

We have studied the filamentation of femtosecond laser pulses (, pulse duration) in poly(methyl methacrylate) doped with 2,2-difluoro-4-(9-anthracyl)-6-methyl-1,3,2-dioxaborine and the associated photomodification of the material. The results demonstrate that multiple filamentation occurs at pulse e...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2013-01, Vol.43 (12), p.1118-1121
Main Authors: Kulchin, Yu.N., Vitrik, O.B., Chekhlenok, A.A., Zhizhchenko, A.Yu, Proshchenko, D.Yu, Mirochnik, A.G., Guohui, Lyu
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Density
DOPED MATERIALS
Femtosecond
femtosecond pulses
FILAMENTS
FLUORINE COMPOUNDS
LASER RADIATION
LASERS
METHACRYLIC ACID ESTERS
multiple filamentation
Photochemical
PHOTOCHEMISTRY
photomodification
PHOTONS
PMMA
Polymethyl methacrylates
POWER DENSITY
Pulse duration
PULSES
Quantum electronics
supercontinuum
two-photon absorption
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Summary:We have studied the filamentation of femtosecond laser pulses (, pulse duration) in poly(methyl methacrylate) doped with 2,2-difluoro-4-(9-anthracyl)-6-methyl-1,3,2-dioxaborine and the associated photomodification of the material. The results demonstrate that multiple filamentation occurs at pulse energies above . At a pulse energy of , it is accompanied by supercontinuum generation. The average filament length in PMMA is and the filament diameter is . An incident power density of ensures inscription of the filament pattern owing to two-photon photochemical processes. Preliminary exposure to continuous light at enables an ordered filament pattern to be written.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2013v043n12ABEH015260