Spiking dynamics of frequency up-converted field generated in continuous-wave excited rubidium vapours

Abstract

We report on spiking dynamics of frequency up-converted emission at 420 nm generated on the 6P3/2-5S1/2 transition in Rb vapour two-photon excited to the 5D5/2 level with laser light at 780 and 776 nm. The spike duration is less than the natural lifetime of any excited level involved in the interaction with both continuous and pulsed pump radiation. The spikes at 420 nm are attributed to temporal properties of the directional emission at 5.23 μm generated on the population inverted 5D5/2-6P3/2 transition. A link between the spiking regime and cooperative effects is discussed. We suggest that the observed stochastic behaviour is due to the quantum-mechanical nature of the cooperative effects rather than random fluctuation of the applied laser fields.

7 pages, 10 figures

References in corpus (13)

• Collimated blue light generated by four-wave mixing in Rb vapour
• Light interacting with atomic ensembles: collective, cooperative and mesoscopic effects
• 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
• Parametric four-wave mixing using a single cw laser
• Parametric wave mixing enhanced by velocity insensitive two-photon excitation in Rb vapour
• Continuous-wave mirrorless lasing at 2.21 μm in sodium vapors
• Amplified spontaneous emission at 5.23 um in two-photon excited Rb vapour
• Collimated UV light generation by two-photon excitation to a Rydberg state in Rb vapor
• Polychromatic, continuous-wave mirrorless lasing from monochromatic pumping of cesium vapor
• Comparison of collimated blue light generation in ${}^{85}$Rb atoms via the D${}_1$ and D${}_2$ lines

Cited by in corpus (5)

• Intensity-correlated spiking infrared and ultraviolet emission from sodium vapors
• Observation of optical Rabi oscillations in transmission signal of atomic vapor under continuous-wave laser excitation
• A Cascade Superradiance Model
• Coherent amplitude modulation of continuous-wave light in cesium vapor
• Intensity Correlated Spiking Emission Due to Cooperative Effects in Alkali Vapors