Directional infrared emission resulting from cascade population inversion and four-wave mixing in Rb vapours

Abstract

Directional infrared emission at 1367 and 5230 nm is generated in Rb vapours that are step-wise excited by low-power resonant light. The mid-infrared radiation originating from amplified spontaneous emission on the 5D-6P transition consists of forward- and backward-directed components with distinctive spectral and spatial properties. Diffraction limited near-infrared light at 1367 nm generated in the co-propagating direction only is a product of parametric wave mixing around the 5P-5D-6P-6S-5P transition loop. This highly non-degenerate mixing process involves one externally applied and two internally generated optical fields. Similarities between wave mixing generated blue and near-IR light are demonstrated.

4 pages, 5 figures

References in corpus (4)

• Trans-spectral orbital angular momentum transfer via four wave mixing in Rb vapor
• Coherent 455nm beam production in cesium vapor
• Frequency evaluation of collimated blue light generated by wave mixing in Rb vapour
• Nonlinear processes responsible for mid-infrared and blue light generation in alkali vapours

Cited by in corpus (17)

• ARC: An open-source library for calculating properties of alkali Rydberg atoms
• Spiral bandwidth of four-wave mixing in Rb vapour
• Distinguishing nonlinear processes in atomic media via orbital angular momentum transfer
• High Helicity Vortex Conversion in a Rubidium Vapor
• Arithmetic with optical topological charged in step-wise excited Rb vapour
• Cavity-enhanced frequency up-conversion in rubidium vapour
• Parametric wave mixing enhanced by velocity insensitive two-photon excitation in Rb vapour
• Continuous-wave mirrorless lasing at 2.21 μm in sodium vapors
• Collimated UV light generation by two-photon excitation to a Rydberg state in Rb vapor
• Amplified spontaneous emission at 5.23 um in two-photon excited Rb vapour
• Polychromatic, continuous-wave mirrorless lasing from monochromatic pumping of cesium vapor
• Optical cavity for enhanced parametric four-wave mixing in rubidium
• Comparison of collimated blue light generation in ${}^{85}$Rb atoms via the D${}_1$ and D${}_2$ lines
• Intensity-correlated spiking infrared and ultraviolet emission from sodium vapors
• Spiking dynamics of frequency up-converted field generated in continuous-wave excited rubidium vapours
• Saturation and alternate pathways in four-wave mixing in rubidium
• Coherent amplitude modulation of continuous-wave light in cesium vapor