Výsledky vyhledávání - "Neset Akozbek"

Akademický článek

Z-Scan theory for thin film measurements: Validation of a model beyond the standard approach using ITO and HfO2

Autor: Andrea Tognazzi, Paolo Franceschini, Thi Ngoc Lam Tran, Alessandro Chiasera, Maria Antonietta Vincenti, Alfonso Carmelo Cino, Neset Akozbek, Michael Scalora, Costantino De Angelis

Publikováno v: Optical Materials: X, Vol 19, Iss , Pp 100242- (2023)

The Z-Scan technique is an easy and widespread approach to evaluate the nonlinear optical coefficient of materials. However, the evaluation of the same coefficients for thin films requires complex experimental setups that allow to remove the contribu

Externí odkaz: https://doaj.org/article/d8899adaae994b9bab6a2c184ff0df54

Zobrazit plný text záznamu

Harmonic generation from metal surfaces and gratings: free electron spill-out layer as an epsilon-near-zero boundary layer (Conference Presentation)

Autor: Michael Scalora, Shroddha Mukhopadhyay, Laura Rodriguez-Sune, Kent A. Hallman, Maria Antonietta A. Vincenti, Domenico de Ceglia, Neset Akozbek, Josep F. Trull, Crina M. Cojocaru

Publikováno v: Metamaterials, Metadevices, and Metasystems 2022.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a45d8342b98a6ba5d557bc187fda406d
https://doi.org/10.1117/12.2633407

Zobrazit plný text záznamu

Experimental and theoretical study of second and third harmonic generation in amorphous silicon

Autor: Laura Rodríguez-Suné, Michael Scalora, Crina M. Cojocaru, Neset Akozbek, Ramon Vilaseca, Jose F. Trull

We report contrasted experimental and theoretical results on second and third harmonic generation from an amorphous silicon nanolayer. We perform this study by analysing the harmonic optical signals generated when fs and ps pulses tuned at 800nm and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb0d5d0252d77158449136ea558ce8c
https://hdl.handle.net/2117/382708

Zobrazit plný text záznamu

Retrieving linear and nonlinear optical dispersions of matter: Numerical ellipsometry of silicon and indium tin oxide nanolayers

Autor: Domenico de Ceglia, L. Rodríguez-Suné, Neset Akozbek, J. Trull, Crina Cojocaru, Michael Scalora, Maria Antonietta Vincenti

Publikováno v: Active Photonic Platforms XIII.

Methods currently used to determine nonlinear optical constants like n2 or chi3 rely on open and closed z-scan techniques. The study of optics at the nanoscale in the femtosecond regime requires new tools and approaches to extract linear and nonlinea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31dc61024c5643c12ce4f2d9986b511d
https://doi.org/10.1117/12.2594256

Zobrazit plný text záznamu

Nonlinear optics at the nanoscale: experiment versus theory

Autor: Michael Scalora, Crina Cojocaru, Neset Akozbek, J. Trull, L. Rodríguez-Suné

Publikováno v: Active Photonic Platforms XIII.

Nanostructures made of semiconductors or metals are nowadays routinely integrated in photonic devices. At this scale light-matter interaction displays interesting new phenomena. We report a collection of experimental results of nonlinear harmonic gen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::056a72b6df26f8c35f6c2bc87829bf64
https://doi.org/10.1117/12.2594223

Zobrazit plný text záznamu

Harmonic generation from gold nanolayers: bound and hot electron contributions

Autor: Michael Scalora, Domenico de Ceglia, Maria Antonietta Vincenti, José Francisco Trull Silvestre, Neset Akozbek, Crina Cojocaru, Laura Rodríguez Suñé

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Currently, nanostructures are routinely fabricated and integrated in different photonic devices for a variety of purposes and applications. For instance, in order to engineer properly nano-antennas or filters, it is important to understand accurately

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58b6ff6701f7b30d12964f66642e1a22
https://hdl.handle.net/2117/346647

Zobrazit plný text záznamu

Harmonic generation in the opaque region of semiconductors: the role of the surface and magnetic nonlinearities

Autor: Michael Scalora, Domenico de Ceglia, J. Trull, Crina Cojocaru, Maria Atonietta Vincenti, L. Rodríguez-Suné, Neset Akozbek

Publikováno v: Active Photonic Platforms XII.

The use of semiconductors such as GaAs, GaP or Si in the process of fabrication of actual nano devices is at the front edge of nowadays technology, exploiting the properties of light propagation and localization at nanometric scale in new and surpris

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::236c75742d900250a195c9c21d84cef2
https://doi.org/10.1117/12.2567233

Zobrazit plný text záznamu

Electrodynamics of Conductive Oxides: Intensity-dependent anisotropy, reconstruction of the effective dielectric constant, and harmonic generation

Autor: Neset Akozbek, Maria Antonietta Vincenti, Crina Cojocaru, Domenico de Ceglia, J. Trull, Michael Scalora, L. Rodríguez-Suné, Zachary J. Coppens

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

We study electromagnetic pulse propagation in an indium tin oxide nanolayer in the linear and nonlinear regimes. We use the constitutive relations to reconstruct the effective dielectric constant of the medium, and show that nonlocal effects induce a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2951581480eb7c892149d9091969337e

Zobrazit plný text záznamu

Long wavelength infrared imaging under ambient thermal radiation via an all-silicon metalens

Autor: Zachary J. Coppens, Karl F. Böhringer, Kent Hallman, Ashok Raman, Neset Akozbek, Arka Majumdar, Luocheng Huang, Zheyi Han

Publikováno v: Optical Materials Express. 11:2907

Further miniaturization of imaging systems is prevented by the prevalent, traditional bulky refractive optics today. Meta-optics have recently generated great interest in the visible wavelength as a replacement for refractive optics thanks to their l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c0d075313e929e3a16c9ac7b116cc26
https://doi.org/10.1364/ome.434362

Zobrazit plný text záznamu

Study of second and third harmonic generation from an indium tin oxide nanolayer: Influence of nonlocal effects and hot electrons

Autor: Zachary J. Coppens, Neset Akozbek, L. Rodríguez-Suné, J. Trull, Simon Wall, Allan S. Johnson, Crina Cojocaru, Michael Scalora, Daniel Perez-Salinas

Publikováno v: APL Photonics, Vol 5, Iss 1, Pp 010801-010801-9 (2020)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

We report comparative experimental and theoretical studies of second and third harmonic generation from a 20nm-thick indium tin oxide layer in proximity of the epsilon-near-zero condition. Using a tunable OPA laser we record both spectral and angular

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::647ccff41e6b280a9a9f569404ce9a60
https://doaj.org/article/60de15f1c1224e769911766a25c55071

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání