Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Gintaras Valiulis"'
Publikováno v:
Optics Express.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a61ef17d68b59b6f7dc49a4ddd406fce
https://doi.org/10.1364/oe.488760
https://doi.org/10.1364/oe.488760
This study presents a novel way to increase the energy conversion efficiency of optical parametric amplification by eliminating the idler wave from the interaction using consecutive type-I and type-II amplification processes. By using the aforementio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae4904b0182b8e5dfa2e505363589e72
https://doi.org/10.1364/opticaopen.22179865
https://doi.org/10.1364/opticaopen.22179865
Autor:
Gintaras Valiulis, Arūnas Varanavičius
Publikováno v:
Lithuanian Journal of Physics. 61
Keywords: optical parametric amplification, absorption The amplification bandwidth of an optical parametric amplifier (OPA) defines the duration of the signal and idler pulse. Usually the OPA bandwidth is described by material dispersion and interact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7817ed251333aaf00a9ac706ce2b59f8
https://doi.org/10.3952/physics.v61i4.4640
https://doi.org/10.3952/physics.v61i4.4640
Publikováno v:
Optics express, Washington : Optical Society of America, 2022, vol. 30, iss. 9, p. 15073-15084
Usually the absorption of interacting waves is detrimental to the parametric amplification process. We show that even in the case of large idler wave absorption it is possible to get highly efficient signal amplification as well as amplifier bandwidt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f0f5a1fbd2b6116dc02d0977e89aeaf
https://repository.vu.lt/VU:ELABAPDB158924685&prefLang=en_US
https://repository.vu.lt/VU:ELABAPDB158924685&prefLang=en_US
Autor:
Gintaras Valiulis
Publikováno v:
OSA Nonlinear Optics 2021.
We demonstrate the formation possibilities of femtosecond highly localized few micron stationary beam in one transverse direction and hundreds of microns in perpendicular with the high focal depth via optical parametric amplification (OPA) process.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a609a69d027e0361d1563dac6759baf7
https://doi.org/10.1364/nlo.2021.nth3a.1
https://doi.org/10.1364/nlo.2021.nth3a.1
Increasing the Efficiency of Optical Parametric Amplifiers With Polarization-Based Idler Elimination
Publikováno v:
OSA Nonlinear Optics 2021.
We demonstrate that using two nonlinear crystals cut for different phase matching types in an optical parametric amplification stage suppresses back-conversion, which results in considerable improvements of conversion efficiency and signal beam quali
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0588f2cb86867da5e90921d6a4269e9a
https://doi.org/10.1364/nlo.2021.nf2a.3
https://doi.org/10.1364/nlo.2021.nf2a.3
Autor:
Gintaras Valiulis
Publikováno v:
OSA Nonlinear Optics 2021.
The bandwidth of the optical parametric amplification (OPA) defines the duration of the signal and idler pulse. In current work, we investigate the influence of the idler wave absorption to the OPA bandwidth.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2f03664754869310ac336570a2c25f9
https://doi.org/10.1364/nlo.2021.nth3a.10
https://doi.org/10.1364/nlo.2021.nth3a.10
Autor:
Gintaras Valiulis, Audrius Zaukevicius
Publikováno v:
Optics Communications. 288:101-106
In this paper we propose a method for pulsed conical wave parametric amplification (PCWPA) with subsequent spatio-temporal compression during propagation in free space. It is numerically demonstrated that Gaussian wave-packet can be reshaped into pul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::107bd5359cfc666abd0cc293498351ac
https://doi.org/10.1016/j.optcom.2012.09.058
https://doi.org/10.1016/j.optcom.2012.09.058
Autor:
Arnaud Couairon, Matthias Baudisch, Nicolas Forget, I. Gražulevičiūtė, Aurélien Houard, Alexandre Thai, Vytautas Jukna, Martin Richardson, D. Majus, Audrius Dubietis, S. Grabielle, Magali Durand, André Mysyrowicz, Gintaras Valiulis, Michael Hemmer, Matthieu Baudelet, Francisco Silva, Gintaras Tamošauskas, J. Darginavičius, Amélie Jarnac, Khan Lim, Yi Liu, Jens Biegert, D. Faccio, Dane R. Austin, Erik McKee, Anne Durécu, N. Garejev
Publikováno v:
Laser Filamentation ISBN: 9783319230832
Laser Filamentation
Andre D. Bandrauk; Emmanuel Lorin; Jerome V. Moloney. Laser Filamentation, Springer International Publishing, pp.147-165, 2016, CRM Series in Mathematical Physics, ⟨10.1007/978-3-319-23084-9_6⟩
Laser Filamentation
Andre D. Bandrauk; Emmanuel Lorin; Jerome V. Moloney. Laser Filamentation, Springer International Publishing, pp.147-165, 2016, CRM Series in Mathematical Physics, ⟨10.1007/978-3-319-23084-9_6⟩
The propagation of near-infrared ultra-short laser pulses in the regime of anomalous dispersion of transparent solids is associated with a host of self-induced effects including a significant spectral broadening extending from the ultraviolet into th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b8df27a781358a2f79f3099c21d28a7
https://doi.org/10.1007/978-3-319-23084-9_6
https://doi.org/10.1007/978-3-319-23084-9_6
Publikováno v:
Optics Communications. 285:3654-3658
We study how the probability density function of a weak seed intensity is transformed in a nonlinear process such as optical parametric amplification. The character of the transformation strongly depends on the amplification regime accessed: in the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bd35a9c86c97fbacd9b80d488ad10a3
https://doi.org/10.1016/j.optcom.2012.04.041
https://doi.org/10.1016/j.optcom.2012.04.041