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Time resolved nonlinear spectroscopy at the band edge of 1D photonic crystals
- Source :
- Journal of Physics D: Applied Physics, Journal of Physics D: Applied Physics, IOP Publishing, 2008, 41 (22), pp.224005. ⟨10.1088/0022-3727/41/22/224005⟩
- Publication Year :
- 2008
- Publisher :
- HAL CCSD, 2008.
-
Abstract
- International audience; Large refractive index changes have been measured at the band edge frequency of 1D photonic crystals. Results concerning both thin and thick samples of high and low refractive index contrast respectively are presented. The very large value of the refractive index changes obtained at moderate pump powers thanks to the strong enhancement of the local intensity inside the photonic crystal open the way to very small volume devices for optical signal processing. However, time-resolved experiments demonstrate the photo-generation of high free carrier densities through two- or even three-photon absorptions which are shown to be also strongly enhanced at the band edge of the photonic crystal. This drawback may the most probably be circumvented by using lower pump intensities in photonic crystals showing narrower resonances.
- Subjects :
- Acoustics and Ultrasonics
Physics::Optics
Nonlinear spectroscopy
Edge (geometry)
01 natural sciences
010309 optics
Optics
0103 physical sciences
010306 general physics
Photonic crystal
Signal processing
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Chemistry
business.industry
nonlinear optics
Nonlinear optics
Condensed Matter Physics
Free carrier
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Intensity (physics)
three photon absorption
photonic crystals
sense organs
business
Refractive index
Subjects
Details
- Language :
- English
- ISSN :
- 00223727 and 13616463
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D: Applied Physics, Journal of Physics D: Applied Physics, IOP Publishing, 2008, 41 (22), pp.224005. ⟨10.1088/0022-3727/41/22/224005⟩
- Accession number :
- edsair.doi.dedup.....1156a4afcbf7e8fb8ef60a471e3be390