Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Oana Valeria Grigore"'
Autor:
Oana-Valeria Grigore, Nicolaie Pavel
Publikováno v:
Results in Engineering, Vol 24, Iss , Pp 103358- (2024)
In this work we report on the characteristics of a passively Q-switched Nd:YAG/Cr4+:YAG laser with four beams, developed for studies on the laser ignition of different combustible mixtures. The compact laser contains a Nd:YAG/Cr4+:YAG ceramic composi
Externí odkaz:
https://doaj.org/article/a4c174ab680e491db22102899b6234e0
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract An optical system comprising a c-cut uniaxial crystal positioned between two axicons and illuminated by a Gaussian or a Laguerre–Gauss mode was used to demonstrate the generation of various vector vortex beams. We focused the generated bea
Externí odkaz:
https://doaj.org/article/3cd032cea4be453fa1268ee92c9d43de
Autor:
Nicolaie Pavel, Gabriela Croitoru, Oana-Valeria Grigore, Nicolae-Tiberius Vasile, Traian Dascalu, Adrian Birtas, Nicolae Boicea, Mihai Dinca, Florin Draghici, Radu Chiriac
Publikováno v:
Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e56d9584c06c633d585b9790a664a9c
https://doi.org/10.1117/12.2620045
https://doi.org/10.1117/12.2620045
Publikováno v:
Scientific reports. 12(1)
An optical system comprising a c-cut uniaxial crystal positioned between two axicons and illuminated by a Gaussian or a Laguerre–Gauss mode was used to demonstrate the generation of various vector vortex beams. We focused the generated beams using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa73d6964954de74cf5116dae7e4ce96
https://pubmed.ncbi.nlm.nih.gov/35581316
https://pubmed.ncbi.nlm.nih.gov/35581316
Publikováno v:
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
An optical vortex (OV) has a number of intrinsic properties, such as spiral phase structure, hollow-core intensity distribution or orbital angular momentum, which leads to many interesting applications in the field of frontier research, like cold ato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e44b2aa3c528de71b598a082cfb47d55
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9542502
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9542502
Autor:
Oana Valeria Grigore, Peter Heinz, Geoff Dearden, Nicolaie Pavel, Mark Bärwinkel, Gabriela Croitoru, Dieter Brüggemann
Publikováno v:
Progress in Quantum Electronics
© 2018 The Author(s) Combustion is one of the most dominant energy conversion processes used in all areas of human life, but global concerns over exhaust gas pollution and greenhouse gas emission have stimulated further development of the process. L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ec9a55dfbfa6cf5c3f6785556c05cb1
https://doi.org/10.1016/j.pquantelec.2018.04.001
https://doi.org/10.1016/j.pquantelec.2018.04.001
Publikováno v:
Optics & Laser Technology. 141:107098
A spiral phase plate (SPP) represents one of the most efficient and cost-effective optical devices used for vortex beam generation. In this work, we studied, both experimentally and theoretically, the effect of illumination of an SPP with a laser bea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f1453d83a38bc6dce7a16be2f5099b7
https://doi.org/10.1016/j.optlastec.2021.107098
https://doi.org/10.1016/j.optlastec.2021.107098
Publikováno v:
Optics & Laser Technology
A laser configuration made of a thin-disk Nd:YAG/YAG composite medium that consists of a circular Nd:YAG core bonded by diffusion to a circular undoped YAG and that has the shape of a plane-concave lens is presented. The pump is done through the undo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f83f8bc1275b9e9e76c869bebf964842
https://doi.org/10.1016/j.optlastec.2017.03.018
https://doi.org/10.1016/j.optlastec.2017.03.018
Autor:
Axel Bodemann, Catalina-Alice Brandus, Christoph Damm, Ramona Eberhardt, Nicolae-Tiberius Vasile, Erik Beckert, Oana Valeria Grigore, Andreas Tünnermann, Nicolaie Pavel, Pol Ribes-Pleguezuelo, Gabriela Croitoru
The low-stress Solderjet Bumping technique was employed to assemble the optical components of an increased-robustness laser spark-plug ignition device using the low melting alloys 96.5Sn3Ag0.5Cu and 80Au20Sn. A finite-element-method analysis, optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30a570df7259ca5bc3fff19660e4760f
https://publica.fraunhofer.de/handle/publica/258794
https://publica.fraunhofer.de/handle/publica/258794
Autor:
Oana Valeria Grigore, Gabriela Croitoru, Mihai P. Dinca, Dieter Brüggemann, Mark Bärwinkel, Peter Heinz, Nicolaie Pavel
Publikováno v:
Laser Ignition Conference 2017
A passively Q-switched Nd:YAG/Cr4+:YAG laser is used to investigate the air breakdown in a static chamber. The characteristics of the transmitted laser pulse are measured and the energy transfer from the pulses to plasma is evaluated. As the air pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eca1deba680e33387dde3af4e6f0af8c
https://doi.org/10.1364/lic.2017.lwa5.9
https://doi.org/10.1364/lic.2017.lwa5.9