Výsledky vyhledávání - "Renato J. Martins"

Femtosecond-laser induced two-photon absorption of GaN and AlxGa1-xN thin films: tuning the nonlinear optical response by alloying and doping

Autor: Cleber Renato Mendonça, Tobias Voss, D. S. Manoel, Renato J. Martins, Marcelo G. Vivas, Christoph Margenfeld, Ruben D. Fonseca, Andreas Waag, I. Manglano-Clavero, J. Dipold

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Semiconductors thin films are the foundation of modern technology. While the nonlinear optical (NLO) properties of bulk semiconductors have been systematically studied in the last three decades, it is still a great challenge to obtain them for semico

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b10d8ab98c305da90989e2c641c4b8c

Zobrazit plný text záznamu

Nonlinear optical waveguides inscribed by fs-laser in organic crystal for broadband second harmonic generation of UV pulses

Autor: José J. Rodrigues, Juliana M. P. Almeida, Renato J. Martins, Cleber Renato Mendonça, G. F. B. Almeida, J. P. Siqueira

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Optical waveguides are main components for the development of integrated photonic devices, not only for allowing light guidance but also for their ability to act as nonlinear optical elements. Direct laser writing with ultrashort pulses has provided

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::857e2635f4823271b319bc45976f5383
https://doi.org/10.1016/j.optmat.2018.06.010

Zobrazit plný text záznamu

Functionalized and microstructured polymeric composites used as gain medium in random lasers systems

Autor: Cleber Renato Mendonça, Renato J. Martins, Lucas F. Sciuti, Adriano J. G. Otuka, P.H.D. Ferreira, Leonardo De Boni

Publikováno v: 2019 SBFoton International Optics and Photonics Conference (SBFoton IOPC).

In this work, we developed optically active polymeric composite which are employed as gain medium in random laser systems. Single-walled carbon nanotubes were added to the polymeric matrix aiming increase the number of scattering centers inside the s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac3c914bfb9c503c9f5275697b1a6805
https://doi.org/10.1109/sbfoton-iopc.2019.8910263

Zobrazit plný text záznamu

Third-order nonlinear optical characterization of fs-laser micromachined waveguides in Gorilla Glass (Conference Presentation)

Autor: Gustavo Ferreira de Almeida, Ramon Gabriel Teixeira Rosa, Franciele R. Henrique, J. P. Siqueira, Renato J. Martins, Marcelo B. Andrade, Cleber Renato Mendonça

Publikováno v: Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIV.

Glasses are important materials for novel technologies, as their properties can be tailored by doping and compositional changes. Furthermore, glasses can also be microstructured, making them interesting for optical and photonic applications. Corning

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fca8ad51b56efd265e5a1d9cc15e92bb
https://doi.org/10.1117/12.2508044

Zobrazit plný text záznamu

Femtosecond direct laser writing of silk fibroin optical waveguides

Autor: Sidney José Lima Ribeiro, Juliana M. P. Almeida, Renato J. Martins, Cleber Renato Mendonça, S.N.C. Santos, Kelly T. Paula, Moliria V. Santos, G. F. B. Almeida

Publikováno v: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Made available in DSpace on 2019-10-06T17:08:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Silk fibroin is an abundant natural polymer, which in the last years has been proposed as an attractive material for high-technological appli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2174e656867ac0e7b1bf6d260f5e1b8

Zobrazit plný text záznamu

Two-photon Absorption of GaN and AlxGa1-xN Thin Films

Autor: Cleber Renato Mendonça, Tobias Voss, Renato J. Martins, Andreas Waag, D. S. Manoel, J. Dipold, Ruben D. F. Rodriguez, Marcelo G. Vivas

Publikováno v: Frontiers in Optics + Laser Science APS/DLS.

Nonlinear absorption of GaN and AlxGa1-xN thin films were studied by the Z-scan technique in the range of 0.53~0.63 Ephoton/Eg, with values ranging from 0.8 to 2.2 cm/GW depending of sample composition, indicating its influences on the nonlinearity.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67c3f3b2b456a4505b4f9257fa3626ca
https://doi.org/10.1364/fio.2019.jw3a.29

Zobrazit plný text záznamu

Nonlinear Features of Femtosecond Laser Written Waveguides in Gorilla® Glass

Autor: Marcelo B. Andrade, Ramon Gabriel Teixeira Rosa, Cleber Renato Mendonça, Franciele R. Henrique, G. F. B. Almeida, J. P. Siqueira, Renato J. Martins

Publikováno v: Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF).

We performed the third-order nonlinear characterization of waveguides produced in Gorilla® Glass by fs-laser irradiation. Through the Dispersive-Scan technique, we found that their nonlinear refractive index is lower than the one for the bulk glass.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e604097b5aab9aaaaf2aee917e1c18b1
https://doi.org/10.1364/bgppm.2018.jtu5a.36

Zobrazit plný text záznamu

Fabrication of waveguides in Gorilla Glass with fs-pulses and its nonlinear features (Conference Presentation)

Autor: Renato J. Martins, G. F. B. Almeida, Craig B. Arnold, Leonardo De Boni, Juliana M. P. Almeida, Cleber Renato Mendonça

Publikováno v: Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXII.

Ultrafast waveguide fabrication has been an active research area since its demonstration, leading to numerous applications. Recently reported high quality waveguide in Gorilla Glass has promoted it as a good candidate for optical devices. In this stu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1447d84fc7392ae3a860e82ef4cc49d
https://doi.org/10.1117/12.2251182

Zobrazit plný text záznamu

Nonlinear Optical Characterization of Gorilla® Glass Waveguides

Autor: Franciele R. Henrique, Cleber Renato Mendonça, G. F. B. Almeida, J. P. Siqueira, Renato J. Martins

Publikováno v: Frontiers in Optics 2017.

In this work, we studied the third order optical nonlinearity of waveguides produced in Gorilla® Glass through the Dispersive-scan technique. Our results indicate that the nonlinear refractive index of the compression layer in Gorilla® Glass is clo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::da60099fa60360bb4164b8dc6b4624cc
https://doi.org/10.1364/fio.2017.jw4a.86

Zobrazit plný text záznamu

Effect of SLM pixelation on two-photon fluorescence by applying an off-centered quadratic spectral phase mask

Autor: Cleber Renato Mendonça, Renato J. Martins, J. P. Siqueira

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Spatial light modulators (SLMs) have become a valuable tool to shape ultrashort laser pulses, which have found innumerous applications in different areas of ultrafast science. Despite the fact that this family of devices can be used to produce almost

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a5d27c70aaadfb3ae88ebf0a08ac11f

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání