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Spatial phase dislocations in femtosecond laser pulses

Bezuhanov, Kaloyan; Dreischuh, Alexander; Paulus, Gerhard G.; Schätzel, Michael G.; Walther, Herbert; Neshev, Dragomir; Królikowski, Wieslaw; Kivshar, Yuri

Description

We show that spatial phase dislocations associated with optical vortices can be embedded in femtosecond laser beams by computer-generated holograms, provided that they are built in a setup compensating for the introduced spatial dispersion of the broad spectrum. We present analytical results describing two possible arrangements: a dispersionless 4𝒇 setup and a double-pass grating compressor. Experimental results on the generation of optical vortices in the output beam of a 20 fs Ti:sapphire...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
URI: http://hdl.handle.net/1885/101458
Source: Journal of the Optical Society of America B
DOI: 10.1364/JOSAB.23.000026

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