Gouy phase-matched angular and radial mode conversion in four-wave mixing

  title={Gouy phase-matched angular and radial mode conversion in four-wave mixing},
  author={R. Offer and Andrew Daffurn and E. Riis and P. Griffin and A. Arnold and S. Franke-Arnold},
  journal={arXiv: Atomic Physics},
We investigate the conversion between transverse mode structures in four-wave mixing in a heated rubidium vapour. While angular momentum conservation in this nonlinear process dictates the selection rules for the angular quantum number, the role of the radial quantum number is more esoteric. We demonstrate experimentally that a clean Laguerre-Gauss mode LG$^\ell_p =$LG$^{0}_{1}$ can be generated by converting LG$^{1}_{0}$ and LG$^{-1}_{0}$ near-infrared pump beams -- but only if the length of… Expand
2 Citations

Figures from this paper

A simple, powerful diode laser system for atomic physics.
A high-power, single-diode laser design with specifications: >210mW, 100 ms-linewidth (427±7)kHz, >99% mode purity, 10 GHz mode-hop-free tuning range, and 12 nm coarse tuning is presented. Expand
Spin to orbital angular momentum transfer in nonlinear wave mixing
We demonstrate the spin to orbital angular momentum transfer in the nonlinear mixing of structured light beams. A vector vortex is coupled to a circularly polarized Gaussian beam in noncollinearExpand


Many graphics and vision problems can be expressed as non-linear least squares optimizations of objective functions over visual data, such as images and meshes. The mathematical descriptions of theseExpand
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)Expand
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variablesExpand
  • Rev. A 101, 043821
  • 2020
  • Rev. A 101, 063805
  • 2020
  • Rev. A 96, 053856
  • 2017
  • Phys. 1, 84
  • 2018
Directional THz generation in hot Rb vapor excited to a Rydberg state.
This work optically excites 85Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D5/2 and observes directional terahertz beams at 3.3 THz and 7.8 THz, paves a new pathway towards generating high-power narrowband THz radiation. Expand
Conversion and manipulation of radial quantum modes in second-harmonic-generation processes
The second-harmonic generation of Laguerre-Gaussian (LG) beams is investigated in this paper with a coupled equation set deduced from the nonlinear paraxial equations. Under the guidance of thisExpand