23–28 Sept 2012
Alghero, Sardegna, Italy
Europe/Rome timezone

Effects of picosecond terawatt UV laser beam filamentation and a repetitive pulse train on creation of prolonged plasma channels in atmospheric air

27 Sept 2012, 19:00
20m
Alghero, Sardegna, Italy

Alghero, Sardegna, Italy

Hotel Calabona

Speaker

Dr Vladimir Zvorykin (PN Lebedev Phys Institute)

Description

The multiple filamentation over very long propagation distances ~ 100 m was measured for peak pulse power exceeding the critical value for λ=248-nm radiation (~108 W) in 2000 times. An all-reflection mirror focusing scheme with a small numerical aperture of about 3 10-4 was designed. The intensity distribution was recorded by using glass plate fluorescence under UV irradiation with imaging at the time-gated CCD. It was found that the filamentation of high-power UV laser beam is quite different of longer wavelengths.

Primary author

Dr Vladimir Zvorykin (PN Lebedev Phys Institute)

Co-authors

Dr A.A. Ionin (P.N. Lebedev Physical Institute of Russian Academy of Sciences) Dr A.O. Levchenko (P.N. Lebedev Physical Institute of Russian Academy of Sciences) Dr A.V. Shutov (P.N. Lebedev Physical Institute of Russian Academy of Sciences) Dr D.V. Sinitsyn (P.N. Lebedev Physical Institute of Russian Academy of Sciences) Dr I.V. Smetanin (P.N. Lebedev Physical Institute of Russian Academy of Sciences) Dr L.V. Seleznev (P.N. Lebedev Physical Institute of Russian Academy of Sciences) Dr N.N. Ustinovskii (P.N. Lebedev Physical Institute of Russian Academy of Sciences)

Presentation materials