Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Daniel Ursescu"'
Autor:
Andrei B. Nazîru, Ştefan Popa, Ana-Maria Lupu, Dan Gh. Matei, Alice Dumitru, Dmitrii Nistor, Antonia Toma, Lidia Văsescu, Ioan Dăncuş, Claudiu A. Stan, Daniel Ursescu
Publikováno v:
High Power Laser Science and Engineering, Vol 12 (2024)
Simultaneous ultra-intense pulses at petawatt laser facilities enable a broad range of experiments in nuclear photonics and strong field quantum electrodynamics. These experiments often require very precise control of the time delays between pulses.
Externí odkaz:
https://doaj.org/article/7d03e59db9a143ac847ca7959f2500f4
Autor:
Petrisor Gabriel Bleotu, Radu Udrea, Alice Dumitru, Olivier Uteza, Maria-Diana Mihai, Dan Gh Matei, Daniel Ursescu, Stefan Irimiciuc, Valentin Craciun
Publikováno v:
High Power Laser Science and Engineering, Vol 12 (2024)
With ultrafast laser systems reaching presently 10 PW peak power or operating at high repetition rates, research towards ensuring the long-term, trouble-free performance of all laser-exposed optical components is critical. Our work is focused on prov
Externí odkaz:
https://doaj.org/article/b03f1b9ed8b141118e203b0b5bc8a037
Autor:
Jonathan Wheeler, Gabriel Petrişor Bleotu, Andrei Naziru, Riccardo Fabbri, Masruri Masruri, Radu Secareanu, Deano M. Farinella, Gabriel Cojocaru, Razvan Ungureanu, Elsa Baynard, Julien Demailly, Moana Pittman, Razvan Dabu, Ioan Dancus, Daniel Ursescu, David Ros, Toshiki Tajima, Gerard Mourou
Publikováno v:
Photonics, Vol 9, Iss 10, p 715 (2022)
The thin-film post-compression technique has the ability to reduce the pulse duration in PW-class lasers, increasing the peak power. Here, the nonlinear response of an increasingly available optical thermoplastic demonstrates enhanced spectral broade
Externí odkaz:
https://doaj.org/article/f26eaade699b43debe8bf1a2400a0894
Publikováno v:
Photonics, Vol 9, Iss 6, p 389 (2022)
Ultra-intense laser pulses with helical phases are of interest in laser-driven charged particle acceleration and related experiments with extreme light. However, such optical vortices can be affected by the presence of residual spatial-temporal coupl
Externí odkaz:
https://doaj.org/article/02b8c46e7def48f08604814e2fa6825c
Autor:
Takahiro Nakamura, Yuliati Herbani, Daniel Ursescu, Romeo Banici, Razvan Victor Dabu, Shunichi Sato
Publikováno v:
AIP Advances, Vol 3, Iss 8, Pp 082101-082101 (2013)
A spectroscopic study of the gold nanoparticle (NP) formation by high-intensity femtosecond laser irradiation of a gold ion solution was reported. The effect of varying energy density of the laser on the formation of gold NPs was also investigated. T
Externí odkaz:
https://doaj.org/article/f82498b2091d444f9ca34804c7e2d2b5
Autor:
Gabriel Petrisor Bleotu, Andrei Naziru, Andrew H. Okukura, Stefan Popa, Dan Matei, Alice Dumitru, Cristian Alexe, Vicentiu P. Iancu, Anda-Maria Talposi, Vlad Costin Musat, Ioan Dancus, Loredana P. Caratas, Bertrand Boisdeffre, Tamas Samoskoi, Jitsuno Takahisa, Jonathan Wheeler, Gerard Mourou, Daniel Ursescu
Publikováno v:
Laser-Induced Damage in Optical Materials 2022.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f93e0670fe113b7d4870cdd8cd1d7e87
https://doi.org/10.1117/12.2641616
https://doi.org/10.1117/12.2641616
Autor:
Anda-Maria Talposi, Daniel Ursescu
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 39(2)
In ultra-intense chirped pulse amplification laser systems, pulses of ultrashort duration and high energy are generated using large spectral bandwidths and large beam diameters. Hence, the spatiotemporal couplings of the laser field can become signif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91f38ddd9b12c71cc6fe2a1b5ed0f251
https://pubmed.ncbi.nlm.nih.gov/35200963
https://pubmed.ncbi.nlm.nih.gov/35200963
Autor:
Christophe Radier, Olivier Chalus, Mathilde Charbonneau, Shanjuhan Thambirajah, Guillaume Deschamps, Stephane David, Julien Barbe, Eric Etter, Guillaume Matras, Sandrine Ricaud, Vincent Leroux, Caroline Richard, François Lureau, Andrei Baleanu, Romeo Banici, Andrei Gradinariu, Constantin Caldararu, Cristian Capiteanu, Andrei Naziru, Bogdan Diaconescu, Vicentiu Iancu, Razvan Dabu, Daniel Ursescu, Ioan Dancus, Calin Alexandru Ur, Kazuo A. Tanaka, Nicolae Victor Zamfir
Publikováno v:
High Power Laser Science and Engineering. 10
We report on the generation and delivery of 10.2 PW peak power laser pulses, using the High Power Laser System at the Extreme Laser Infrastructure – Nuclear Physics facility. In this work we demonstrate for the first time, to the best of our knowle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ae8f9929cdf5065946791dddcc35193
https://doi.org/10.1017/hpl.2022.11
https://doi.org/10.1017/hpl.2022.11
Autor:
Vicentiu Iancu, Maria Talposi, Stefan Popa, Petru Ghenuche, Mihail Cernaianu, Domenico Doria, Gabriel Cojocaru, Ioan Dancus, Razvan Ungureanu, Olivier Chalus, Daniel Ursescu
Publikováno v:
Imaging and Applied Optics Congress 2022 (3D, AOA, COSI, ISA, pcAOP).
Optical vortices, generated by a spiral phase plate, were propagated over long distances and focused in the PW experimental area. A deformable mirror was used to correct the low-order distortions, obtaining a doughnut focus.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a3db58922999a18905fbc2f94dcb950
https://doi.org/10.1364/aoa.2022.oth4b.2
https://doi.org/10.1364/aoa.2022.oth4b.2
Autor:
Claudiu A. Stan, Matias Daniel de Almeida, I. Dancus, Daniel Ursescu, Dan Matei, Veselin Aleksandrov
Publikováno v:
Physical Review Fluids. 5
Shock waves are generated when a laser pulse ablates a thin jet of water. The shocks have irregular initial shapes, but they flatten and generate secondary shocks as they propagate inside the jet. The shocks can then travel together over long distanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::496ec0e9318abc7d94cedae6a4ac0f05
https://doi.org/10.1103/physrevfluids.5.123402
https://doi.org/10.1103/physrevfluids.5.123402