Buffer-gas induced absorption resonances in Rb vapor

Abstract

We observe transformation of the electromagnetically induced transparency (EIT) resonance into the absorption resonance in a $\Lambda$ interaction configuration in a cell filled with ${}^{87}$Rb and a buffer gas. This transformation occurs as a one-photon detuning of the coupling fields is varied from the atomic transition. No such absorption resonance is found in the absence of a buffer gas. The width of the absorption resonance is several times smaller than the width of the EIT resonance, and the changes of absorption near these resonances are about the same. Similar absorption resonances are detected in the Hanle configuration in a buffered cell.

11 pages, 15 figures; 13 pages, 17 figures, added numerical simulation

References in corpus (12)

• Ultra-Slow Light and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas
• Resonant nonlinear magneto-optical effects in atoms
• Narrowing of EIT resonance in a Doppler Broadened Medium
• Enhanced absorption Hanle effect on the Fg=F->Fe=F+1 closed transitions
• Enhancement of Magneto-Optic Effects via Large Atomic Coherence
• Theory of dark resonances for alkali vapors in a buffer-gas cell
• From Laser Induced Line Narrowing To Electromagnetically Induced Transparency: Closed System Analysis
• Absorption resonance and large negative delay in Rb vapor with buffer gas
• Large negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas
• Inhibition of electromagnetically induced absorption due to excited state decoherence in Rb vapor
• Quantum theory of resonantly enhanced four-wave mixing: mean-field and exact numerical solutions
• Sub-natural linewidth in room-temperature Rb vapor using a control laser

Cited by in corpus (9)

• A practical guide to electromagnetically induced transparency in atomic vapor
• Phase induced transparency mediated structured beam generation in a closed-loop tripod configuration
• Performance of a prototype atomic clock based on lin||lin coherent population trapping resonances in Rb atomic vapor
• Electromagnetically induced absorption and transparency in magneto-optical resonances in elliptically polarized field
• Frequency-Dependent Squeeze Amplitude Attenuation and Squeeze Angle Rotation by Electromagnetically Induced Transparency for Gravitational Wave Interferometers
• Atomic Clocks and Coherent Population Trapping: Experiments for Undergraduate Laboratories
• Channelization architecture for wide-band slow light in atomic vapors
• A relation between electromagnetically induced absorption resonances and nonlinear magneto-optics in Lambda-systems
• Narrow and contrast resonance of increased absorption in Lambda-system observed in Rb cell with buffer gas