Translator Disclaimer
28 April 2017 Polarized and asymmetric emission of single colloidal nanoplatelets (Conference Presentation)
Author Affiliations +
Efficient coupling of nanoemitters to photonic or plasmonic structures requires the control of the orientation of the emitting dipoles. Nevertheless controlling the dipole orientation remains an experimental challenge. Many experiments rely on the realization of numerous samples, in order to be able to statistically get a well aligned dipole to realize an efficient coupling to a nanostructure. In order to avoid these statistical trials, the knowledge of the nature of the emitter and its orientation is crucial for a deterministical approach. We developed a method [1],[2] relying on the combination of polarimetric measurement and emission diagram which gives fine information both on the emitting dipolar transition involved and on the dipolar orientation We analyse by this method square and rectangle single colloidal CdSe/CdS nanoplatetelets. We demonstrate that their emission can be described by just by two orthogonal dipoles lying in the plane of the platelets. More surprisingly the emission of the square nanoplatelets is not polarised whereas the rectangle one is. We demonstrate that this polarized emission is due to the rectangular shape anisotropy by a dielectric effect. [1] C. Lethiec, et al, Three-dimensional orientation measurement of a single fluorescent nanoemitter by polarization analysis, Phys. Rev. X 4, 021037 (2014), [2] C. Lethiec et al, Polarimetry-based analysis of dipolar transitions of single colloidal CdSe/CdS dot-inrods, New Journal of Physics 16, 093014 (2014) [3] S. Ithurria et al, colloidal nanoplatelets with 2 dimensional electronic structure, Nature Materials 10, 936 (2011)
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fu Feng, Thu Loan N'Guyen, Michel Nasilowski, Clotilde M. Lethiec, Benoit Dubertret, Laurent Coolen, and Agnès Maître "Polarized and asymmetric emission of single colloidal nanoplatelets (Conference Presentation)", Proc. SPIE 10114, Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XIV, 101140D (28 April 2017);


Recent advances in Mie-resonant metaphotonics
Proceedings of SPIE (January 01 1900)
Dielectric resonant metaphotonics
Proceedings of SPIE (January 01 1900)
Subwavelength focusing of nanopatterned photon sieves
Proceedings of SPIE (November 17 2010)
Ab initio engineering of Fano resonances
Proceedings of SPIE (September 20 2011)

Back to Top