Telecom-wavelength spectra of a Rydberg state in a hot vapor

Abstract

We study telecom-wavelength spectra of a Rydberg state in an atomic vapor with a three-photon excitation scheme. Two lasers of 780 nm and 776 nm are used to pump Rubidium-85 atoms in a vapor cell to the $5D_{5/2}$ state, from which a probe beam of 1292 nm in the O-band telecommunication wavelength drives a transition to the $21F_{7/2}$ Rydberg state. We investigate the probe spectra over the power of pump lasers. The simulation based on a 4-level theoretical model captures the main features of the experimental results. This spectroscopic study paves the way for future experiments of making a direct link between fiber optics and radio transmission via Rydberg atoms.

5 pages and 4 figures

References in corpus (3)

• Giant electro-optic effect using polarizable dark states
• High efficiency coherent microwave-to-optics conversion via off-resonant scattering
• Directional THz generation in hot Rb vapor excited to a Rydberg state