Photoacoustic and optical imaging of the femtosecond filament in water

Boris Rumiantsev; Evgenii Mareev; Anton Bychkov; Vladimir Makarov; Aleksandr Karabutov; Elena Cherepetskaya; Fedor Potemkin

doi:10.1117/12.2520987

30 April 2019 Photoacoustic and optical imaging of the femtosecond filament in water

Boris Rumiantsev, Evgenii Mareev, Anton Bychkov, Vladimir Makarov, Aleksandr Karabutov, Elena Cherepetskaya, Fedor Potemkin

Author Affiliations +

Proceedings Volume 11026, Nonlinear Optics and Applications XI; 1102606 (2019) https://doi.org/10.1117/12.2520987
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

We report on a new experimental technique aimed to investigate femtosecond filamentation process in transparent condensed dielectrics. The proposed method is based on a highly resolved shadow photography and wideband (about 100MHz) photoacoustic imaging. We demonstrate, that combination of these techniques allows conducting comprehensive filament investigation by retrieving the value of the energy deposition into a medium, plasma electron density and the size of the filament formation region. Moreover, applying these techniques we studied the dependence of filament properties on a filamentation regime.

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Boris Rumiantsev, Evgenii Mareev, Anton Bychkov, Vladimir Makarov, Aleksandr Karabutov, Elena Cherepetskaya, and Fedor Potemkin "Photoacoustic and optical imaging of the femtosecond filament in water", Proc. SPIE 11026, Nonlinear Optics and Applications XI, 1102606 (30 April 2019); https://doi.org/10.1117/12.2520987

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