Steady-state stimulated Raman generation and filamentation using complex vector vortex beams | Zendy

Henry J. Meyer | Zendy; Sandra Mamani | Zendy; R. R. Alfano | Zendy

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Steady-state stimulated Raman generation and filamentation using complex vector vortex beams

Author(s) -

Henry J. Meyer,

Sandra Mamani,

R. R. Alfano

Publication year - 2020

Publication title -

applied optics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.668

H-Index - 197

eISSN - 2155-3165

pISSN - 1559-128X

DOI - 10.1364/ao.393973

Subject(s) - filamentation , physics , optics , nanosecond , polarization (electrochemistry) , raman scattering , vortex , raman spectroscopy , laser , atomic physics , chemistry , thermodynamics

Stimulated Raman scattering and laser filamentation produced using nanosecond pulsed complex vector vortex beams (CVVB) are investigated in a 20 cm long methanol cell. The CVVB is generated using q -plates and is tested at orbital angular momentum ( L ) values of 1, 2, 3, and 4 and circular, radial, and azimuthal polarizations. The results illustrate that the stability and intensity of the generated stimulated Raman has dependence on input polarization and L value. During filamentation, the beam is also shown to break up into multiple primary filaments and that there is a reduction in small-scale filamentation when using CVVBs.

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