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Journal Article

Ultrafast Tunable Optical Delay Line Based on Indirect Photonic Transitions

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons21693

Kampfrath,  Tobias
FOM Institute AMOLF;
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Fulltext (public)

1211.6597v1.pdf
(Preprint), 558KB

PhysRevLett.108.213901.pdf
(Publisher version), 576KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Beggs, D. M., Rey, I. H., Kampfrath, T., Rotenberg, N., Kuipers, L., & Krauss, T. F. (2012). Ultrafast Tunable Optical Delay Line Based on Indirect Photonic Transitions. Physical Review Letters, 108(21): 213901. doi:10.1103/PhysRevLett.108.213901.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-2257-6
Abstract
We introduce the concept of an indirect photonic transition and demonstrate its use in a dynamic delay line to alter the group velocity of an optical pulse. Operating on an ultrafast time scale, we show continuously tunable delays of up to 20 ps, using a slow light photonic crystal waveguide only 300  μm in length. Our approach is flexible, in that individual pulses in a pulse stream can be controlled independently, which we demonstrate by operating on pulses separated by just 30 ps. The two-step indirect transition is demonstrated here with a 30% conversion efficiency.