.png){kind=icon}
.png){kind=icon}
返回
Free-space optical delay line using space-time wave packets
.png){kind=icon}
OA
AI
DOI：10.1038/s41467-020-19526-x.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
An optical buffer featuring a large delay-bandwidth-product-a critical component for future all-optical communications networks-remains elusive. Central to its realization is a controllable inline optical delay line, previously accomplished via engineered dispersion in optical materials or photonic structures constrained by a low delay-bandwidth product. Here we show that space-time wave packets whose group velocity is continuously tunable in free space provide a versatile platform for constructing inline optical delay lines. By spatio-temporal spectral-phase-modulation, wave packets in the same or in different spectral windows that initially overlap in space and time subsequently separate by multiple pulse widths upon free propagation by virtue of their different group velocities. Delay-bandwidth products of similar to 100 for pulses of width similar to 1ps are observed, with no fundamental limit on the system bandwidth.
Keyword:
SLOW-LIGHT
BANDWIDTH PRODUCT
GROUP-VELOCITY
PULSED BEAMS
DIFFRACTION
SPEED
PROPAGATION
EQUATION
BREAKING
VACUUM
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
