Efficient beam converter for the generation of high-power femtosecond vortices
- 30 July 2010
- journal article
- research article
- Published by Optica Publishing Group in Optics Letters
- Vol. 35 (15) , 2660-2662
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.Keywords
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Funding Information
- National Health and Medical Research Council of Australia
- Australian Research Council
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