Sluggish light for radio-frequency true-time-delay applications with a large time-bandwidth product

被引:6
|
作者
Gao, Lu [1 ]
Herriot, Sandrine I. [1 ]
Wagner, Kelvin H. [1 ]
机构
[1] Univ Colorado, Optoelect Comp Syst Ctr, Boulder, CO 80309 USA
关键词
D O I
10.1364/OL.31.003360
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A new radio-frequency (RF) photonic technique for achieving large RF time delays has been experimentally demonstrated using femtosecond pulses modulated by an acousto-optic tunable filter in a frequency-mapped and Doppler-shifted modulation scheme. A short optical delay line with length of 240 mu m produces nearly 3 mu s RF time delay after optical heterodyne detection, resulting in an effective slow-light velocity of 86 m/s. A delay-to-pulse-width ratio of 20 based on this technique has been observed, with a larger fractional delay foreseeable. (c) 2006 Optical Society of America
引用
收藏
页码:3360 / 3362
页数:3
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