Off-resonance absorption and dispersion in a Doppler-broadened medium

Abstract

We study the absorptive and dispersive properties of Doppler-broadened atomic media as a function of detuning. Beginning from the exact lineshape calculated for a two-level atom, a series of approximations to the electric susceptibility are made. These simplified functions facilitate direct comparison between absorption and dispersion, and show that dispersion dominates the atom-light interaction far from resonance. The calculated absorption and dispersion are compared to experimental data, showing the validity of the approximations.

9 pages, 4 figures

References in corpus (8)

• Absolute absorption on the rubidium D lines: comparison between theory and experiment
• Wide-bandwidth, tunable, multiple-pulse-width optical delays using slow light in cesium vapor
• Slow-light Faraday effect: an atomic probe with gigahertz bandwidth
• Polarization-based Light-Atom Quantum Interface with an All-optical Trap
• Representations of noncommutative quantum mechanics and symmetries
• Faraday filtering of Raman light in an isotopically pure alkali metal vapor
• A heated vapor cell unit for DAVLL in atomic rubidium
• Broadband optical delay with large dynamic range using atomic dispersion

Cited by in corpus (16)

• An optical isolator using an atomic vapor in the hyperfine Paschen-Back regime
• Absolute absorption on rubidium D1 line: including resonant dipole-dipole interactions
• Faraday filtering of Raman light in an isotopically pure alkali metal vapor
• Absolute absorption and dispersion of a rubidium vapour in the hyperfine Paschen-Back regime
• Optical control of Faraday rotation in hot Rb vapor
• Effect of line broadening on the performance of Faraday filters
• Sub-natural linewidths in excited-state spectroscopy
• Absorption spectroscopy and Stokes polarimetry in a ${}^{87}$Rb vapour in the Voigt geometry with a 1.5 T external magnetic field
• Measuring the Stokes parameters for light transmitted by a high-density rubidium vapour in large magnetic fields
• Quantitative optical spectroscopy of ${}^{87}$Rb vapour in the Voigt geometry in DC magnetic fields up to 0.4T
• An atomic Faraday beam splitter for light generated from pump degenerate four-wave mixing in a hollow-core photonic crystal fiber
• An analytical model of Faraday rotation in hot alkali metal vapours
• Voigt transmission windows in optically thick atomic vapours: a method to create single-peaked line centre filters
• Frequency Fluctuations in Tunable and Nonlinear Microwave Cavities
• In Situ Characterisation of an Optically Thick Atom-Filled Cavity
• Indirect measurement of atomic magneto-optical rotation via Hilbert transform