Spatial phase dislocations in femtosecond laser pulses Academic Article uri icon

abstract

  • 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. 2006 Optical Society of America.

published proceedings

  • JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

author list (cited authors)

  • Bezuhanov, K., Dreischuh, A., Paulus, G. G., Schatzel, M. G., Walther, H., Neshev, D., Krolikowski, W., & Kivshar, Y.

citation count

  • 25

complete list of authors

  • Bezuhanov, K||Dreischuh, A||Paulus, GG||Schatzel, MG||Walther, H||Neshev, D||Krolikowski, W||Kivshar, Y

publication date

  • January 2006