Spatial shaping of low- and high-order harmonics generated using vortex beams
Andra Naresh Kumar Reddy,
Vyacheslav V Kim,
Victor Kärcher
et al.
Abstract:We demonstrate the generation of the low- and high-order harmonic vortex beams from a single spiral phase plate (SPP) illuminated by different laser wavelengths. The second harmonic (532 nm) originates from the application of the wavefront-structured 1064 nm femtosecond pulses with fractional orbital angular momentum during propagation through a lithium triborate crystal, while the third harmonic (500 nm) originates from the application of the wavefront-structured near-IR (1500 nm) femtosecond pulses with inte… Show more
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