Ultrafast adiabatic manipulation of slow light in a photonic crystal

Journal Article · Thu Apr 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.043837· OSTI ID:21408731

Kampfrath, T; Kuipers, L ^[1]; Beggs, D M; White, T P; Krauss, T F ^[2]; Melloni, A ^[3]

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1. Institute for Atomic and Molecular Physics (AMOLF), Science Park 104, NL-1098 XG Amsterdam (Netherlands)
2. School of Physics and Astronomy, University of St. Andrews, St. Andrews, Fife KY16 9SS (United Kingdom)
3. Dipartimento di Elettronica e Informazione, Politecnico di Milano, Via Ponzio 34/5, I-20133 Milano (Italy)

We demonstrate by experiment and theory that a light pulse propagating through a Si-based photonic-crystal waveguide is adiabatically blueshifted when the refractive index of the Si is reduced on a femtosecond time scale. Thanks to the use of slow-light modes, we are able to shift a 1.3-ps pulse at telecom frequencies by 0.3 THz with an efficiency as high as 80% in a waveguide as short as 19{mu}m. An analytic theory reproduces the experimental data excellently, which shows that adiabatic dynamics are possible even on the femtosecond time scale as long as the external stimulus conserves the spatial symmetry of the system.

• OSTI ID: 21408731
• Journal Information: Physical Review. A, Vol. 81, Issue 4; Other Information: DOI: 10.1103/PhysRevA.81.043837; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARSENIC 80
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EFFICIENCY
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REFRACTIVE INDEX
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ARSENIC ISOTOPES
BETA DECAY RADIOISOTOPES
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