TY - JOUR
T1 - Spatial phase dislocations in femtosecond laser pulses
AU - Bezuhanov, Kaloyan
AU - Dreischuh, Alexander
AU - Paulus, Gerhard G.
AU - Schätzel, Michael G.
AU - Walther, Herbert
AU - Neshev, Dragomir
AU - Królikowski, Wieslaw
AU - Kivshar, Yuri
PY - 2006/1
Y1 - 2006/1
N2 - 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 laser and the proof-of-principle measurements with a broadband-tunable cw Ti:sapphire laser confirm our theoretical predictions.
AB - 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 laser and the proof-of-principle measurements with a broadband-tunable cw Ti:sapphire laser confirm our theoretical predictions.
UR - http://www.scopus.com/inward/record.url?scp=33644511065&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.23.000026
DO - 10.1364/JOSAB.23.000026
M3 - Article
SN - 0740-3224
VL - 23
SP - 26
EP - 35
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 1
ER -