Real-time Phase Conjugation of Vector Vortex Beams
arXiv:1910.07437 · doi:10.1021/acsphotonics.9b01524
Abstract
Vector vortex beams have played a fundamental role in the better understanding of coherence and polarization. They are described by spatially inhomogeneous polarization states, which present a rich optical mode structure that has attracted much attention for applications in optical communications, imaging, spectroscopy and metrology. However, this complex mode structure can be quite detrimental when propagation effects such as turbulence and birefringence perturb the beam. Optical phase conjugation has been proposed as a method to recover an optical beam from perturbations. Here we demonstrate full phase conjugation of vector vortex beams using three-wave mixing. Our scheme exploits a fast non-linear process that can be conveniently controlled via the pump beam. Our results pave the way for sophisticated, practical applications of vector beams.
arXiv comment7 pages, 8 figures
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- Directly determining orbital angular momentum of ultrashort Laguerre-Gauss pulses via autocorrelation measurement
- Spatio-Spectral Quantum State Estimation of Photon Pairs from Optical Fiber Using Stimulated Emission
- Inhibition of the phase conjugation of orbital angular momentum superpositions in cylindrical vector beams during stimulated Brillouin scattering