Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:0704.1279 · Physical Review Letters

Wide-Bandwidth, Tunable, Multiple-Pulse-Width Optical Delays Using Slow Light in Cesium Vapor

Ryan M. Camacho, Michael Vern Pack, John C. Howell, Aaron Schweinsberg, Robert W. Boyd

Published Apr 10, 2007• 135 citations
arXivHTMLPDF

Abstract

We demonstrate an all-optical delay line in hot cesium vapor that tunably delays 275 ps input pulses up to 6.8 ns and 740 input ps pulses up to 59 ns (group index of approximately 200) with little pulse distortion. The delay is made tunable with a fast reconfiguration time (hundreds of ns) by optically pumping out of the atomic ground states.

DOI
10.1103/physrevlett.98.153601

Related papers

Reconfigurable Signal Processing Using Slow-Light-Based Tunable Optical Delay Lines

Jacob B. Khurgin, R.S. Tucker

As a potential enabling technology, slow light has captured much research interest over the past few years for achieving a continuously tunable optical delay line [1]. In principle, slow light is generated by tailoring an enhanced group-index resonance within a given nonlinear medium. This effective refractive index change is experienced by the data stream passing through and thus induces a controllable group delay onto the signal. Themain feature of a slow-light-based optical delay line is the capability for fine-grain temporal manipulation of optical pulses. This fine tunable delay element is envisioned to be useful for various high-bandwidth signal processing functions and applications.

CRC Press eBooks•Oct 8, 2018•0 citations

Tunable optical delay hole burning and ground state depletion effects in cesium vapor

Monte D. Anderson, Eric M. Guild, Glen P. Perram

Optically tunable pulse delays in cesium vapor were demonstrated by pumping several D2 transitions and burning holes in the D1 absorption spectrum. A modified sub-Doppler absorption spectroscopy setup was used with counter propagating beams with a Gaussian 7-ns full-width at half-maximum probe pulse is scanned across the D1 absorption spectrum. Probe laser optical delays followed Kramers-Kronig model prediction for Cs D1 without D2 pump laser. Optical control of pulse delay was demonstrated by varying pump intensity. Localized delay effects in agreement with model predictions were observed in the neighborhood of a burnt hole.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Feb 10, 2011•0 citations

Tunable Slow Light in Cesium Vapor

Aaron Schweinsberg, Ryan M. Camacho, Michael Vern Pack +2 more

We obtain large fractional pulse delays in a Cesium vapor for a probe centered between two absorption resonances in the hyperfine structure. This delay can be tuned by applying pump fields to the absorption lines.

Frontiers in Optics•Jan 1, 2006•0 citations

Slow light propagation in a linear-response three-level atomic vapor

Wenhai Ji, Chunabi Wu, Michael G. Raymer

We observe pulse delays of up to twenty times the input pulse duration when 200 ps laser pulses pass through a hot Rb 85 vapor cell. The pulse peak travels with a velocity equal to c/20, and the energy transmission is 5%. For pulses with a linewidth greater than typical features in the atomic dispersion, pulse delay is predicted and observed for all center frequencies near resonance. Pulse advance is never observed. The measurements are in good agreement with a three-level linear-dispersion calculation. We are able to control the amount of delay by using a steady-state laser beam for optical pumping of the ground states prior to sending in the test pulse.

arXiv:physics/0603145•Journal of the Optical Society of America B•Feb 15, 2007•2 citations

Broadband Optical Delay with Large Dynamic Range Using Atomic Dispersion

Michael Ross Vanner, Russell McLean, Andrei I. Sidorov +2 more

We report on a tunable all-optical delay line for pulses with optical frequency within the Rb D2 absorption line. Using frequency tuning between absorption components from different isotopes, pulses of 10 ns duration are delayed in a 10 cm hot vapour cell by up to 40 ns while the transmission remains above 10%. The use of two isotopes allows the delay to be increased or decreased by optical pumping with a second laser, producing rapid tuning over a range of more than 40% of the initial delay at 110°C. We investigate the frequency and intensity ranges in which this delay line can be realized. Our observations are in good agreement with a numerical model of the system.

Quantum-Atom Optics Downunder (QAO)•Jan 1, 2007•1 citation

Broadband optical delay with a large dynamic range using atomic dispersion

Michael Ross Vanner, R J McLean, P Hannaford +1 more

We report on a tunable all-optical delay line for pulses with optical frequency within the Rb D 2 absorption line. Using frequency tuning between absorption components from different isotopes, pulses of 10 ns duration are delayed in a 10 cm hot vapour cell by up to 40 ns while the transmission remains above 10%. The use of two isotopes allows the delay to be increased or decreased by optical pumping with a second laser, producing rapid tuning over a range of more than 40% of the initial delay at 110 °C. We investigate the frequency and intensity ranges in which this delay line can be realized. Our observations are in good agreement with a numerical model of the system.

arXiv:0711.4172•Journal of Physics B Atomic Molecular and Optical Physics•Feb 26, 2008•23 citations
We demonstrate an all-optical delay line in hot cesium vapor that tunably delays 275 ps input pulses up to 6.8 ns and 740 input ps pulses up to 59 ns (group index of approximately 200) with little pulse distortion. The delay is made tunable with a fast reconfiguration time (hundreds of ns) by optically pumping out of the atomic ground states.
As a potential enabling technology, slow light has captured much research interest over the past few years for achieving a continuously tunable optical delay line [1]. In principle, slow light is generated by tailoring an enhanced group-index resonance within a given nonlinear medium. This effective refractive index change is experienced by the data stream passing through and thus induces a controllable group delay onto the signal. Themain feature of a slow-light-based optical delay line is the capability for fine-grain temporal manipulation of optical pulses. This fine tunable delay element is envisioned to be useful for various high-bandwidth signal processing functions and applications.
Optically tunable pulse delays in cesium vapor were demonstrated by pumping several D2 transitions and burning holes in the D1 absorption spectrum. A modified sub-Doppler absorption spectroscopy setup was used with counter propagating beams with a Gaussian 7-ns full-width at half-maximum probe pulse is scanned across the D1 absorption spectrum. Probe laser optical delays followed Kramers-Kronig model prediction for Cs D1 without D2 pump laser. Optical control of pulse delay was demonstrated by varying pump intensity. Localized delay effects in agreement with model predictions were observed in the neighborhood of a burnt hole.
We observe pulse delays of up to twenty times the input pulse duration when 200 ps laser pulses pass through a hot Rb 85 vapor cell. The pulse peak travels with a velocity equal to c/20, and the energy transmission is 5%. For pulses with a linewidth greater than typical features in the atomic dispersion, pulse delay is predicted and observed for all center frequencies near resonance. Pulse advance is never observed. The measurements are in good agreement with a three-level linear-dispersion calculation. We are able to control the amount of delay by using a steady-state laser beam for optical pumping of the ground states prior to sending in the test pulse.
We report on a tunable all-optical delay line for pulses with optical frequency within the Rb D2 absorption line. Using frequency tuning between absorption components from different isotopes, pulses of 10 ns duration are delayed in a 10 cm hot vapour cell by up to 40 ns while the transmission remains above 10%. The use of two isotopes allows the delay to be increased or decreased by optical pumping with a second laser, producing rapid tuning over a range of more than 40% of the initial delay at 110°C. We investigate the frequency and intensity ranges in which this delay line can be realized. Our observations are in good agreement with a numerical model of the system.
We report on a tunable all-optical delay line for pulses with optical frequency within the Rb D 2 absorption line. Using frequency tuning between absorption components from different isotopes, pulses of 10 ns duration are delayed in a 10 cm hot vapour cell by up to 40 ns while the transmission remains above 10%. The use of two isotopes allows the delay to be increased or decreased by optical pumping with a second laser, producing rapid tuning over a range of more than 40% of the initial delay at 110 °C. We investigate the frequency and intensity ranges in which this delay line can be realized. Our observations are in good agreement with a numerical model of the system.