Optical cavity for enhanced parametric four-wave mixing in rubidium

Abstract

We demonstrate the implementation of a ring cavity to enhance the efficiency of parametric four-wave mixing in rubidium. Using an input coupler with 95% reflectance, a finesse of 19.6$\pm$0.5 is achieved with a rubidium cell inside. This increases the circulating intensity by a factor of 5.6$\pm$0.5, and through two-photon excitation on the $5s_{1/2}\to 5d_{5/2}$ transition with a single excitation laser, up to 1.9$\pm$0.3 mW of power at 420 nm is generated, 50 times what was previously generated with this scheme. The dependence of the output on Rb density and input power has been explored, suggesting the process may be approaching saturation. The blue output of the cavity also shows greatly improved spatial quality, combining to make this a promising source of 420 nm light for future experiments.

References in corpus (15)

• Trans-spectral orbital angular momentum transfer via four wave mixing in Rb vapor
• Narrow Band Source of Transform-Limited Photon Pairs via Four-Wave Mixing in a Cold Atomic Ensemble
• Collimated blue light generated by four-wave mixing in Rb vapour
• Enhanced frequency up-conversion in Rb vapor
• Coherent 455nm beam production in cesium vapor
• Collimated Blue and Infrared Beams Generated by Two-Photon Excitation in Rb Vapor
• Directional infrared emission resulting from cascade population inversion and four-wave mixing in Rb vapours
• Distinguishing nonlinear processes in atomic media via orbital angular momentum transfer
• Counterintuitive temporal shape of single photons
• Parametric four-wave mixing using a single cw laser
• Cavity-enhanced frequency up-conversion in rubidium vapour
• Four-Wave Mixing in Ultracold Atoms using Intermediate Rydberg States
• Frequency evaluation of collimated blue light generated by wave mixing in Rb vapour
• Four-wave mixing in a ring cavity
• Linewidth of collimated wavelength-converted emission in Rb vapours

Cited by in corpus (5)

• Spiral bandwidth of four-wave mixing in Rb vapour
• Gouy phase-matched angular and radial mode conversion in four-wave mixing
• Parametric wave mixing enhanced by velocity insensitive two-photon excitation in Rb vapour
• Comparison of collimated blue light generation in ${}^{85}$Rb atoms via the D${}_1$ and D${}_2$ lines
• Saturation and alternate pathways in four-wave mixing in rubidium