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新虫 (初入文坛)

应助: 0 (幼儿园)
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虫号: 2022381
注册: 2012-09-22
专业: 凝聚态物性 II ：电子结构

[交流] 巴黎csc项目光电材料方向

转发两则巴黎十一大与csc合作博士课题offer

第一个课题：
CSC/Paris-Sud University cooperation program 2016
PhD proposal  form
Discipline Physics and Engineering  Doctoral School 575 - Electrical, Optical, Bio - physics and Engineering (EOBE) Thesis subject title Graded Photonic Crystals devices * Laboratory name Institut dÕƒlectronique Fondamentale D UMR 8622 * Laboratory web site https://www.ief.u-psud.fr * PhD supervisor (contact person) * Name Akmansoy Eric * Position Maitre de conferences D HDR - HC * Email eric.akmansoy@u-psud.fr * Phone number 33 1 6915 4143 * Thesis proposal Graded photonic crystals allow to efficiently control the propagation of the EM field. Their compactness make them very attractive to realize photonic devices. We demonstrated a "photonic mirage" by the means of such a graded photonic crystal. Recently, we have demonstrated a graded index photonic crystal lens. The design consist to engineer the equi-frequency curves of photonic crystal. Our aim is to fabricate efficient photonic devices for integrated optics. These devices are well adapted for optical pumping of micro-cavity, organic substances, biophotonics, etc. We wish to developp such devices up to telecom domain (1.55μm) and visible domain (600nm).  Graded photonic devices will be designed, fabricated in clean-room and characterized. This work is thus about numerical design, nano-technological fabrication and experimental characterization. Silicium on insulator (SOI) will be involved, which is well mastered at Institut d'Electronique Fondamentale.  Indeed, "state of the art" photonic crystals microcavites have been already fabricated that require a very good control of the position, the size of the patterns. During this thesis, the candidate will have to design, fabricate and characterize the devices. Therefore, he will carry out the design by the means of numerical tools, will fabricate the devices in a clean-room and, then, will characterize them. He will have to present its result in international conferences.  * Relevant publications of the laboratory in the fiel 1. F. Gaufillet and E. Akmansoy. Design of flat graded index lenses using dielectric graded photonic crystals. Optical Materials, 47(555 ): 2015. https://dx.doi.org/10.1016/j.optmat.2015.06.038. 2. F. Gaufillet and E. Akmansoy. Design and experimental evidence of a flat graded-index photonic crystal lens. Journal of Applied Physics, 114(8), 2013. https://dx.doi.org/10.1063/1.4817368 3. F. Gaufillet and E ?. Akmansoy. Graded photonic crystals for graded index lens. Optics Communications, 285(10-11):2638D2641, 2012. 10.1016/j.optcom.2012.01.051 4. ƒric Akmansoy, Emmanuel Centeno, Kevin Vynck, David Cassagne, and Jean-Michel Lour- tioz, Appl. Phys. Lett. 92, 133501 (2008) 5. Z. Han, X. Checoury, D. NŽel, S. David, M. E. Kurdi, P. Boucaud, Optimized design for ultra-high Q silicon photonic crystal cavities, Optics Communications 283 (21) (2010) 4387 D 4391 Paris-Sud / CSC program 2016 PhD project proposal form

第二个课题

CSC/Paris-Sud University cooperation program 2016
PhD proposal  form
Discipline Physics and Engineering  Doctoral School 575 - Electrical, Optical, Bio - physics and Engineering (EOBE) Thesis subject title All-dielectric metamaterial for terahertz * Laboratory name Institut dÕƒlectronique Fondamentale D UMR 8622 * Laboratory web site https://www.ief.u-psud.fr * PhD supervisor (contact person) * Name Akmansoy Eric * Position Maitre de conferences - HDR * Email eric.akmansoy@u-psud.fr * Phone number 33-1 6915 4143 * Thesis proposal  Metamaterials have opened a new field in physics and engineering. Indeed, these articifial materials exhibit unnatural electromagnetic properties, such as effective resonant permeability and/or permittivity. When both are together, the metamaterial exhibits negative index of refraction. From this latter, new phenomena are expected such as negative refraction, sub-wavelength focusing, left-handed propagation, etc. Devices such as the superlens or the invisibility cloak have been investigated. While most of metamaterials are fabricated from metallic pattern, thus limiting their properties, we study and realize all-dielectric metamaterial. They consist of high permittivity dielectric resonators involving Mie resonances. We have demonstrated negative effective permeability and/or permittivity by the means of all-dielectric metamaterials. We have also demonstrated a negative index all-dielectric metamaterial. To date, these are operating in the microwave domain. During this thesis, all dielectric metamaterials will be designed, fabricated and characterized for the terahertz range. Negative index will be studied in this frequency domain, which is a challenge.  Various devices which will be investigated such as flat lens, gradient devices, etc. This work will take place within a group of scientists of different disciplines (chemist, material scientist, physicist), joined in the Terametadiel ANR Project. * Relevant publications of the laboratory in the field  [1] Experimental evidence of effective permittivity from a dielectric metamaterial T. Lepetit and E. Akmansoy and J.-P. Ganne Journal Of Applied Physics, Vol. 109, p. 023115 (2011).  [2] Resonance continuum coupling in high-permittivity dielectric metamaterials. T.êLepetit, E.êAkmansoy, J.-P. Ganne, and J.-M. Lourtioz. Physical Review B, Vol. 82(19) pp. 195307 (2010).  [3] Experimental measurement of negative index in an all-dielectric metamaterial T. Lepetit and E. Akmansoy and J.-P. Ganne Applied Physics Letters, Vol. 95, pp 121101 (2009)  [4] Broadband negative magnetism from all-dielectric metamaterial T. Lepetit ƒ. Akmansoy M. PatŽ and J.-P. Ganne Electronics Letters, Vol. 44, pp. 1119-1121, (2008) Paris-Sud / CSC program 2016 PhD project proposal form

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