科研之友
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摘要
Picosecond pulsed frequency-doubled optical vortices were generated using a pair of beta-BaB2O4 crystals with their c axes inverted. This arrangement produced high-quality ultraviolet vortex output with low spatial separation of the phase singularity at a conversion efficiency of similar to 40%. We also discuss the theoretical spatial form and beam propagation of the ultraviolet vortex output.
- 出版日期2017-10-10
