Zobrazeno 1 - 10
of 78
pro vyhledávání: '"V. Pyragaite"'
Publikováno v:
Optics Communications. 347:102-107
The refocusing of femtosecond laser pulses forming the filament in air is studied both numerically and experimentally. The evolution of fundamental as well as third harmonic pulses and spectra during propagation in the filament is discussed. It is sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ca3da270ba95b68ddf735082c13caec
https://doi.org/10.1016/j.optcom.2015.03.006
https://doi.org/10.1016/j.optcom.2015.03.006
Publikováno v:
Optics Communications. 333:71-74
The large spectral shifts of the fundamental and third harmonic waves (up to 20 nm and 50 nm, respectively) during femtosecond laser pulse filamentation in air have been demonstrated by using focusing lenses of long focal length. It was shown that in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b22d4905dab57d53bb82af4505e35861
https://doi.org/10.1016/j.optcom.2014.07.060
https://doi.org/10.1016/j.optcom.2014.07.060
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
Publikováno v:
IEEE Journal of Quantum Electronics. 46:1031-1038
Optical parametric chirped pulse amplifiers (OPCPAs) are widely recognized and rapidly developing devices for high-power femtosecond pulse generation. In this paper we reveal the main issues of OPCPA gain bandwidth extension for amplification of puls
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8993ea5cc3e120c8302f9ccd7c150bd
https://doi.org/10.1109/jqe.2010.2042926
https://doi.org/10.1109/jqe.2010.2042926
Publikováno v:
Optics Communications. 283:1144-1151
We present simple analytical solutions of coupled wave equations describing chirped pulse parametric amplification under pump depletion. The evolution of the duration and spectrum of amplified pulses in OPA pumped by Gaussian and supergaussian pulses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1466c6ac86a18e20bd9e4c28c2fb259b
https://doi.org/10.1016/j.optcom.2009.11.026
https://doi.org/10.1016/j.optcom.2009.11.026
Publikováno v:
Optics Communications. 257:139-145
The modifications of an angular spectrum of the intense Bessel J 0 and J 1 beams caused by self-action in the medium with large cubic nonlinearity are investigated. The appearance of an outer ring of triple radius was observed. The phenomenon can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b5b56aed393021d3881c621c5b539fb
https://doi.org/10.1016/j.optcom.2005.07.012
https://doi.org/10.1016/j.optcom.2005.07.012
Autor:
S. Mikalauskas, V. Pyragaite, A. Piskarskas, Valerijus Smilgevičius, A. Stabinis, K. Regelskis
Publikováno v:
Optics Communications. 240:191-200
It is revealed that orbital angular momentum can be conserved within the spontaneous parametric down-conversion of higher-order Bessel beam. That is the result of strong transverse selection of spontaneously arising optical fields in optical parametr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f202492eb344946965e90e338562af8
https://doi.org/10.1016/j.optcom.2004.06.031
https://doi.org/10.1016/j.optcom.2004.06.031
Autor:
V. Pyragaite, A. Stabinis
Publikováno v:
Optics Communications. 220:247-255
A vorticity of the light field created by interference of two intersecting Laguerre–Gaussian singular beams is analysed. It is demonstrated that the number and location of the vortices present in the field depend on the propagation length as well a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4581b86967ae66c04c566627b809ccab
https://doi.org/10.1016/s0030-4018(03)01422-6
https://doi.org/10.1016/s0030-4018(03)01422-6
Autor:
V. Pyragaite, A. Stabinis
Publikováno v:
Optics Communications. 213:187-191
The propagation of a combined beam consisting of two noncoaxial vortex beams is investigated. It is demonstrated that the vortical properties of the combined beam under diffraction depend on propagation length as well as on amplitude ratio of individ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef385941ce5c891ef70bcc387b994598
https://doi.org/10.1016/s0030-4018(02)02083-7
https://doi.org/10.1016/s0030-4018(02)02083-7