利用铯蒸汽中的慢光实现宽带宽、可调谐、多脉冲宽度的光学延迟。

Wide-bandwidth, tunable, multiple-pulse-width optical delays using slow light in cesium vapor.

作者信息

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

机构信息

Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.

出版信息

Phys Rev Lett. 2007 Apr 13;98(15):153601. doi: 10.1103/PhysRevLett.98.153601. Epub 2007 Apr 10.

DOI:10.1103/PhysRevLett.98.153601

PMID:17501346

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.

摘要

我们展示了一种在热铯蒸气中的全光延迟线，它能以很小的脉冲失真可调谐地延迟275皮秒的输入脉冲，延迟时间可达6.8纳秒，以及740皮秒的输入脉冲，延迟时间可达59纳秒（群折射率约为200）。通过光泵浦使原子基态耗尽，延迟可在快速重构时间（数百纳秒）内实现可调谐。