Optical drills by dynamic high-order bessel beam mixing

Autor: Gabrielius Kontenis, Darius Gailevičius, Noé Jiménez, Kęstutis Staliunas

[EN] One of the key trends in laser material processing is the usage of structured laser beams. Collimated and focused Gaussian beams are the most common tools; however, more exotic beams can be beneficial too. For instance, Bessel beams with elongat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da1ca2bb8a685b198a31496675ce514e
https://hdl.handle.net/2117/384823

Super-collimation by axisymmetric diffractive metamirror

Autor: Ruslan A. Lymarenko, Martynas Peckus, Victor B. Taranenko, Lina Grineviciute, Kestutis Staliunas, Darius Gailevičius, I. Meskelaite

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

We propose and demonstrate experimentally super-collimation of light beams by an axisymmetric diffractive metamirror—an axisymmetric concentric dielectric ring structure positioned in front of a mirror at a distance of several micrometers. By super

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05b83e56c59a8019c2ff0411548304b2
http://hdl.handle.net/2117/359031

Influence of Laser Beam Power and Scanning Speed on the Macrostructural Characteristics of AISI 316L and AISI 431 Stainless Steel Depositions Produced by Laser Cladding Process

Autor: Luis Henrique Rodrigues Apolinario, Marcus V. P. dos Santos, Erike Wilker Arruda Figueredo, Tiago Felipe de Abreu Santos, Ana Carla Santos da Silva, M. S. F. Lima, J. A. Avila

Publikováno v: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Made available in DSpace on 2021-06-25T10:27:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 In the laser cladding process, control of the process parameters and knowledge of the characteristics of the materials used are essential for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0c5ddc746fe79cc00f8edb66d215629

Synthesis of light needles with tunable length and nearly constant irradiance

Autor: David Maluenda, Rosario Martínez-Herrero, Ignasi Juvells, Artur Carnicer

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
E-Prints Complutense. Archivo Institucional de la UCM
instname
Recercat. Dipósit de la Recerca de Catalunya
Scientific Reports

We introduce a new method for producing optical needles with tunable length and almost constant irradiance based on the evaluation of the on-axis power content of the light distribution at the focal area. According to theoretical considerations, we p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6de487eb7ee28413c75344f62179e0e3
http://hdl.handle.net/2445/124669

Graphene Q-switched Er,Yb:GdAl3(BO3)4 laser at 1550 nm

Autor: Mateos, X., GORBACHENYA, K., KISEL, V., YASUKEVICH, A., LOIKO, P., MALTSEV, V., LEONYUK, N., Aguiló, M., Díaz, F., GRIEBNER, W., PETROV, V., KULESHOV, N.

Publikováno v: Applied Optics
Repositori Institucional de la Universitat Rovira i Virgili
Consejo Superior de Investigaciones Científicas (CSIC)

single-layer graphene saturable absorber is employed for passive Q-switching of an Er,Yb:GdAl3(BO3)4 (Er,Yb:GdAB) compact laser, representing the first Er-doped oxoborate laser Q-switched by graphene. This laser ibased on a c-cut 1.8 at.% Er3+, 15 at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=RECOLECTA___::6d766acc7e6308a05a67c6fc8c276ef7
http://hdl.handle.net/20.500.11797/PC3255