Nanoengineering the second order susceptibility in semiconductor quantum dot heterostructures
| Autor: | Claude Nogues, Dan Oron, Joseph Zyss, Dominique Chauvat, Shoshana Winter, Marcin Zielinski, Radoslaw Kolkowski |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Nanostructure business.industry Nonlinear optics Nanoparticle Heterojunction Nanoengineering Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Atomic and Molecular Physics and Optics Nanomaterials Condensed Matter::Materials Science Semiconductors Nanocrystal Quantum dot Materials Testing Quantum Dots Cadmium Compounds Nanotechnology Optoelectronics Tellurium business |
| Zdroj: | Optics Express. 19:6657 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.19.006657 |
| Popis: | We study second-harmonic generation from single CdTe/CdS core/shell rod-on-dot nanocrystals with different geometrical parameters, which allow to fine tune the nonlinear properties of the nanostructure. These hybrid semiconductor-semiconductor nanoparticles exhibit extremely strong and stable second-harmonic emission, although the size of CdTe core is still within the strong quantum confinement regime. The orientation sensitive polarization response is analyzed by means of a pointwise additive model of the third-order tensors associated to the nanoparticle components. These findings prove that engineering of semiconducting complex heterostructures at the single nanoparticle scale can lead to extremely bright nanometric nonlinear light sources. |
| Databáze: | OpenAIRE |
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