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Atomic absorbers for controlling pulse propagation in resonators
V S C Manga Rao1, Subhasish Dutta Gupta, Girish S Agarwal
1School of Physics, University of Hyderabad, Hyderabad 500046, India.
Optics Letters
|February 5, 2004
Summary
This study demonstrates tunable pulse velocity, from subluminal to superluminal, within a Fabry-Perot cavity containing resonant absorbers. The research explores atom-cavity coupling and saturation effects influencing pulse advancement.
Area of Science:
- Quantum optics
- Cavity quantum electrodynamics
- Nonlinear optics
Background:
- Fabry-Perot cavities are fundamental optical resonators.
- Resonant absorbers within cavities can modify light propagation.
- Atom-cavity coupling is crucial for controlling quantum phenomena.
Purpose of the Study:
- To investigate pulse propagation dynamics in a Fabry-Perot cavity with macroscopic resonant absorbers.
- To demonstrate the tunability of pulse velocity, including superluminal propagation.
- To analyze the influence of cavity-absorber interplay and saturation effects.
Main Methods:
- Theoretical modeling of pulse propagation through a Fabry-Perot cavity.
- Inclusion of macroscopic resonant absorbers and silver mirrors.
- Analysis of strongly coupled atom-cavity systems.
- Investigation of varying mirror thickness and atomic damping.
Main Results:
- Achieved tunable pulse velocity ranging from subluminal to superluminal.
- Observed interplay between cavity properties and absorber characteristics.
- Demonstrated saturation effects on pulse advancement with increased mirror thickness and atomic damping.
Conclusions:
- Strongly coupled atom-cavity systems enable precise control over optical pulse velocity.
- Macroscopic resonant absorbers offer a pathway to engineer subluminal and superluminal light propagation.
- Saturation phenomena play a significant role in pulse advancement dynamics.
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