Controllable ultrabroadband slow light in a warm rubidium vapor
Abstract
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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https://hdl.handle.net/10161/5105Published Version (Please cite this version)
10.1364/JOSAB.28.002578Publication Info
(2011). Controllable ultrabroadband slow light in a warm rubidium vapor. Journal of the Optical Society of America B: Optical Physics, 28(11). pp. 2578-2583. 10.1364/JOSAB.28.002578. Retrieved from https://hdl.handle.net/10161/5105.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Show full item recordScholars@Duke
Martin Fischer
Research Professor in the Department of Chemistry
Dr. Fischer’s research focuses on exploring novel nonlinear optical contrast mechanisms
for molecular imaging. Nonlinear optical microscopes can provide non-invasive, high-resolution,
3-dimensional images even in highly scattering environments such as biological tissue.
Established contrast mechanisms, such as two-photon fluorescence or harmonic generation,
can image a range of targets (such as autofluorescent markers or some connective tissue
structure), but many of the most molecularly specif
Daniel J. Gauthier
Research Professor of Physics
Prof. Gauthier is interested in a broad range of topics in the fields of nonlinear
and quantum optics, and nonlinear dynamical systems.
In the area of optical physics, his group is studying the fundamental characteristics
of highly nonlinear light-matter interactions at both the classical and quantum levels
and is using this understanding to develop practical devices.
At the quantum level, his group has three major efforts in the area of quantum communication
and networking. I
Joel Alter Greenberg
Associate Research Professor in the Department of Electrical and Computer Engineering
Dr. Greenberg's research is in the area of computational imaging with a focus on physics-based
modeling and system-level design from fundamental science through algorithm implementation.
His work spans the electromagnetic spectrum, with a focus on X-ray and visible imaging
and detection systems for security and medical applications.
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