Ultrafast Tilting of the Dispersion of a Photonic Crystal and Adiabatic Spectral Compression of Light Pulses

被引：37

作者：

Beggs, Daryl M. ^{[1
,2
]}

Krauss, Thomas F. ^{[2
]}

Kuipers, L. ^{[1
]}

Kampfrath, Tobias ^{[1
,3
]}

机构：

[1] FOM Inst AMOLF, NL-1098 XG Amsterdam, Netherlands

[2] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[3] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

SLOW LIGHT; CHIP;

D O I：

10.1103/PhysRevLett.108.033902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate, by theory and experiment, the ultrafast tilting of the dispersion curve of a photonic-crystal waveguide following the absorption of a femtosecond pump pulse. By shaping the pump-beam cross section with a nanometric shadow mask, different waveguide eigenmodes acquire different spatial overlap with the perturbing pump, leading to a local flattening of the dispersion by up to 11%. We find that such partial mode perturbation can be used to adiabatically compress the spectrum of a light pulse traveling through the waveguide.

引用

页数：5