Controllable ultrabroadband slow light in a warm rubidium vapor
We study ultrabroadband slow light in a warm rubidium vapor cell. By working between the D1 and D2 transitions, we find a several-nanometer window centered at 788:4nm in which the group index is highly uniform and the absorption is small (<1%). We demonstrate that we can control the group delay by varying the temperature of the cell, and we observe a tunable fractional delay of 18 for pulses as short as 250 fs (6:9nm bandwidth) with a fractional broadening of only 0.65 and a power leakage of 55%. We find that a simple theoretical model is in excellent agreement with the experimental results. Using this model, we discuss the impact of the pulse's spectral characteristics on the distortion it incurs during propagation through the vapor. © 2011 Optical Society of America.
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Related Subject Headings
- Optics
- 5108 Quantum physics
- 5102 Atomic, molecular and optical physics
- 4008 Electrical engineering
- 0906 Electrical and Electronic Engineering
- 0205 Optical Physics
- 0102 Applied Mathematics
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Optics
- 5108 Quantum physics
- 5102 Atomic, molecular and optical physics
- 4008 Electrical engineering
- 0906 Electrical and Electronic Engineering
- 0205 Optical Physics
- 0102 Applied Mathematics