Trans-spectral orbital angular momentum transfer via four wave mixing in Rb vapor
arXiv:1203.1520 · doi:10.1103/PhysRevLett.108.243601
Abstract
We report the transfer of phase structure, and in particular of orbital angular momentum, from near-infrared pump light to blue light generated in a four-wave-mixing process in 85Rb vapour. The intensity and phase profile of the two pump lasers at 780nm and 776nm, shaped by a spatial light modulator, influences the phase and intensity profile of light at 420nm which is generated in a subsequent coherent cascade. In particular we oberve that the phase profile associated with orbital angular momentum is transferred entirely from the pump light to the blue. Pumping with more complicated light profiles results in the excitation of spatial modes in the blue that depend strongly on phase-matching, thus demonstrating the parametric nature of the mode transfer. These results have implications on the inscription and storage of phase-information in atomic gases.
4 pages, 4 figures. Referees' improvements incorporated
References in corpus (4)
Cited by in corpus (21)
- Spatially dependent electromagnetically induced transparency
- ElecSus: A program to calculate the electric susceptibility of an atomic ensemble
- Frequency up-conversion and arbitrary sum arithmetic of lights with orbital angular momentum
- Orbital angular momentum light frequency conversion and interference with quasi-phase matching crystals
- Orbital angular momentum mixing in type II second harmonic generation
- ElecSus: Extension to arbitrary geometry magneto-optics
- Interference and nonlinear properties of four-wave-mixing resonances in thermal vapor: Analytical results and experimental verification
- Observation of Anomalous Orbital Angular Momentum Conservation in Parametric Nonlinearity
- Parametric upconversion of Ince-Gaussian modes
- Frequency evaluation of collimated blue light generated by wave mixing in Rb vapour
- Collimated UV light generation by two-photon excitation to a Rydberg state in Rb vapor
- Optical cavity for enhanced parametric four-wave mixing in rubidium
- Identifying the orbital angular momentum of light based on atomic ensembles
- A classical to quantum optical network link for orbital angular momentum carrying light
- Transfer and evolution of structured polarization in a double-V atomic system
- Spatial distribution of two symmetric four-wave mixing signals induced by Gaussian beams
- Indirect precise angular control using four-wave mixing
- Dynamic Stark shift in a Doppler-broadened four-wave mixing
- Generation of coupled orbital angular momentum modes from an optical vortex parametric laser source
- Poincaré sphere symmetries in four-wave mixing with orbital angular momentum
- Spatial correlations in four-wave mixing with structured light