A. Dreischuh, K. Bezuhanov, G. G. Paulus, M. Schätzel, H. Walther, D. N. Neshev, W. Krolikowski, Yu. S. Kivshar
In this work we review recent results demonstrating the possibility to create spatial phase dislocations in broadband coherent optical fields. We consider optical system utilizing a computer generated hologram combined with spatial dispersion compensation. Analytical results describing three possible arrangements (dispersionless 4f -setup, 2f-2f-setup, and double-pass grating compressor scheme) are presented. Experimental data confirming the theoretical predictions are discussed.