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Ultrafast tunable optical delay line based on indirect photonic transitions

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Beggs_UltrafastTunableOpticalDelay_2012.pdf (594.8Kb)
Date
21/05/2012
Author
Beggs, Daryl Matthew
Rey, Isabella Helen
Kampfrath, Tobias
Rotenberg, Nir
Kuipers, L.
Krauss, Thomas Fraser
Funder
EPSRC
Grant ID
EP/F001622/1
Keywords
QC Physics
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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 mu m 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.
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 , vol. 108 , no. 21 , 213901 . https://doi.org/10.1103/PhysRevLett.108.213901
Publication
Physical Review Letters
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevLett.108.213901
ISSN
0031-9007
Type
Journal article
Rights
© 2012 American Physical Society
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/2808

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