Control of the Onset of Filamentation in Condensed Media
Abstract
Propagation of intense, ultrashort laser pulses through condensed media like crystals of BaF2 and sapphire results in the formation of filaments. We demonstrate that the onset of filamentation may be controlled by rotating the plane of polarization of incident light. We directly visualize filamentation in BaF2 via six-photon absorption-induced fluorescence and, concomitantly, by probing the spectral and spatial properties of white light that is generated.
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