期刊
ACS PHOTONICS
卷 10, 期 12, 页码 4519-4528出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.3c01417
关键词
high-order harmonics generation; S-waveplate; spiral phase plate; vortex beams; vector beams; two-color pump
This study reports the generation of vector and vortex high-order harmonic beams using phase-modifying optical elements. By combining two-color pump-enhanced harmonics with polarization-structured beams, spatially structured and twisted wavefront harmonics are generated.
We report the generation of vector and vortex high-order harmonic beams in argon using the femtosecond laser pulses propagated through the phase-modifying optical elements (S-waveplate or spiral phase plate). The effect of two-color pump-enhanced harmonics is combined with the polarization-structured vector and vortex beams. The application of a radially polarized vector beam in the orthogonal polarization two-color pump scheme allows for the generation of spatially structured odd- and even-order harmonics with variably polarized components. The intermediate states between radial and azimuthally polarized vector beams allow the generation of harmonics with twisted wavefronts.
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