Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Valerijus Smilgevičius"'
Autor:
Domas Kudarauskas, Valerijus Smilgevičius, A. Stabinis, R. Butkus, Algis Piskarskas, Viktorija Tamulienė
Publikováno v:
Lithuanian Journal of Physics. 57:19-28
Optical parametric amplification of an input narrowband signal beam in the field of a spatially incoherent conical pump is investigated. Two amplification regimes – onset and exponential – are distinguished. The possibility to amplify the signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::205381a8cd4bcacb2c2b5274838df4ec
https://doi.org/10.3952/physics.v57i1.3452
https://doi.org/10.3952/physics.v57i1.3452
Publikováno v:
Optics Communications. 382:405-409
We show experimentally and theoretically that under some circumstances the doubly resonant OPO's output energy and spectrum periodically depend on the nonlinear crystal temperature. We explain these phenomena using a simple matrix formalism, and inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef187a302b6c9f5fb47a7c926910b16d
https://doi.org/10.1016/j.optcom.2016.08.009
https://doi.org/10.1016/j.optcom.2016.08.009
Autor:
Stanislovas Balickas, Valerijus Smilgevičius, Virginija Petrauskienė, Audrius Zaukevicius, Andrejus Michailovas, Kirilas Michailovas
Publikováno v:
Lithuanian Journal of Physics. 58
Chirped pulse amplification (CPA) technique was realized in Nd:YVO4 and Nd:YAG amplifiers. The front-end of the system consists of an Yb-doped fiber-optic master oscillator and a chirped fiber Bragg grating stretcher with a chain of Nd-based solid-st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fee9491c25867f924bf33cb6a7e23e25
https://doi.org/10.3952/physics.v58i2.3745
https://doi.org/10.3952/physics.v58i2.3745
Autor:
R. Butkus, Valerijus Smilgevičius, Riaan Stuart Coetzee, Fredrik Laurell, Valdas Pasiskevicius
Publikováno v:
Lithuanian Journal of Physics. 58
We investigate the emergence of spatial and temporal coherence for the fields in the noncritical nondegenerate parametric second-order down-conversion process pumped with low spatial and temporal coherence beams. It is shown that in this scenario, wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6cfebac2990825242ca0e9a659f31d4
https://doi.org/10.3952/physics.v58i1.3652
https://doi.org/10.3952/physics.v58i1.3652
Publikováno v:
Optics Communications. 349:24-30
In this paper we both theoretically and experimentally demonstrate possibility to form double charged optical vortex using only one S-waveplate in double-pass geometry. The experimental results are presented as well as analysis of underlying theoreti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9e79f7de438537be7ddd920a28d7047
https://doi.org/10.1016/j.optcom.2015.03.036
https://doi.org/10.1016/j.optcom.2015.03.036
Publikováno v:
Optics Communications. 324:58-62
We investigate theoretically the parametric diffraction effect in the two-beam-pumped optical parametric amplifier. The analytical solutions for the signal as well as diffracted beams in the linear regime are obtained. We demonstrate that at large in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5ba596b14d53d97a7042ca73259878e
https://doi.org/10.1016/j.optcom.2014.03.034
https://doi.org/10.1016/j.optcom.2014.03.034
Autor:
A. Stabinis, G. Archipovaitė, V. Pyragaite, D. Kezys, Valerijus Smilgevičius, R. Butkus, A. Piskarskas
Publikováno v:
Optics Communications. 309:344-348
Parametric diffraction at small intersection angles of pump beams is investigated theoretically as well as experimentally in the case of optical parametric amplification. It is revealed that the parametric diffraction can be avoided at smaller critic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d5048f97f9b4f9b6ca83c4e7e743533
https://doi.org/10.1016/j.optcom.2013.08.008
https://doi.org/10.1016/j.optcom.2013.08.008
Autor:
Saulius Frankinas, Audrius Zaukevicius, Kirilas Michailovas, Valerijus Smilgevičius, Audrius Pugzlys, Andrius Baltuška, Andrejus Michailovas, Rokas Danilevicius, Nerijus Rusteika
Publikováno v:
Optics express. 24(19)
We report on the developed front-end/pump system for optical parametric chirped pulse amplifiers. The system is based on a dual output fiber oscillator/power amplifier which seeds and assures all-optical synchronization of femtosecond Yb and picoseco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7488e0b245f769766ffe00651bbc9b8
https://pubmed.ncbi.nlm.nih.gov/27661960
https://pubmed.ncbi.nlm.nih.gov/27661960
Autor:
Viačeslav Kudriašov, Valdas Sirutkaitis, Mangirdas Malinauskas, Domas Paipulas, Valerijus Smilgevičius
Publikováno v:
Applied Physics A. 104:769-773
We report studies of the modifications induced inside lithium niobate and KDP crystals by Yb:KGW ultrafast laser pulses, having 300-fs pulse duration and operating at 100-kHz repetition rate. By focusing the laser beam with a 0.42 numerical-aperture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87a2153beb31faf73ee3cada51e5ee4a
https://doi.org/10.1007/s00339-011-6428-7
https://doi.org/10.1007/s00339-011-6428-7
Publikováno v:
Optics Communications. 284:2206-2209
Terahertz emission from air excited by the tightly focused fundamental and second harmonic pulses of femtosecond Ti:Sapphire laser has been analyzed. It has been found that the curved phase fronts of the pump waves cancel each other resulting in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::103044b81cbbe2ee6c4cbf087cb80d28
https://doi.org/10.1016/j.optcom.2010.12.063
https://doi.org/10.1016/j.optcom.2010.12.063