Efficient beam converter for the generation of high-power femtosecond vortices. Academic Article uri icon

abstract

  • We describe an optical beam converter for an efficient transformation of Gaussian femtosecond laser beams to single- or double-charge vortex beams. The device achieves a conversion efficiency of 75% for single- and 50% for double-charge vortex beams and can operate with high-energy broad bandwidth pulses. We also show that the topological charge of a femtosecond vortex beam can be determined by analyzing its intensity distribution in the focal area of a cylindrical lens.

author list (cited authors)

  • Shvedov, V. G., Hnatovsky, C., Krolikowski, W., & Rode, A. V.

citation count

  • 44

publication date

  • August 2010