Group of parametric processes and optical vortices
Head of scientific group:
Prof. habil. dr. Valerijus Smilgevičius
Description:
The main research activities in Group of parametric processes and vortices are:
• Experimental investigations of fundamental three-wave optical parametric generation and amplification processes in bulk crystals as well as periodically poled materials, namely transformations of spatial profile during parametric light interaction, control over spectral bandwidth and exploration of new pumping schemes. Also, the concept of optical parametric chirped pulse amplification is exploited for the generation of ultrashort powerful pulses in the visible to obtain a TW-class level radiation.
• Special attention is paid to unusual light structures such as quasi-nondiffracting Bessel beams and optical vortices. The investigation of formation, propagation and nonlinear transformations of special spatial structures in media with second and third order nonlinearities are performed.
Staff:
Prof. habil. dr. Valerijus Smilgevičius
Dr. Skirmantas Ališauskas
Lect. dr. Rytis Butkus
Lab. assistant Darius Kezys
Lab. assistant Darius Urbonas
Lab. assistant Mindaugas Malcius
Projects of the group:
Cell Biology and Lasers: Towards New Technologies (CEBIOLA)
LASERLAB-EUROPE - Integrated European Laser Laboratories
ELI - Extreme Light Infrastructure
INTEGRA - High average power multi-beam pumped femtosecond optical parametric amplifier
Establishment of the multi-functional laser facility “NAGLIS”
SKAIZERIS - High Energy Pulsed Fiber Laser
Publications:
Ališauskas S., Butkus R., Pyragaitė V., Smilgevičius V., Stabinis A., Piskarskas A., Prospects for increasing average power of optical parametric chirped pulse amplifiers via multi-beam pumping // Optics Communications 2010, Vol. 283, p. 469-473.
Pyragaitė V., Stabinis A., Butkus R., Antipenkov R., Varanavičius A., Parametric amplification of chirped optical pulses under pump depletion // Optics Communications 2010, Vol. 283, p. 1144-1151.
Mucke O.D., Sidorov D., Dombi P., Pugžlys A., Baltuška A., Ališauskas S., Smilgevičius V., Pocius J., Giniūnas L., Danielius R., Forget N., Scalable Yb-MOPA-driven carrier-envelope phase stable few-cycle parametric amplifier at 1.5 μm // Optics Letters 2009, Vol. 34, No.2 p. 118-120.
Mucke O.D., Ališauskas S., Verhoef A.J., Pugžlys A., Baltuška A., Smilgevičius V., Pocius J., Giniūnas L., Danielius R., Forget N., Self-compression of millijoule 1.5 μm pulses // Optics Letters 2009, Vol. 34, No. 16, p. 162498-3.
Gu X., Marcus G., Deng Y., Metzger T., Teisset C., Ishii N., Fuji T., Baltuška A., Butkus R., Pervak V., Ishizuki H., Taira T., Kobayashi T., Kienberger R., Krausz F., Generation of carrier-envelope-phase-stable 2-cycle 740 mJ pulses at 2.1-μm carrier wavelength // Optics Express 2009, Vol. 17, No.1, p. 62-69.
Pugžlys A., Andriukaitis G., Baltuška A., Su L., Xu J., Li H., Lai J.W., Phua P.B., Marcinkevičius A., Fermann M.E., Giniūnas L., Danielius R., Ališauskas S., Multi-mj, 200 fs, cw-pumped, cryogenically cooled, Yb, Na:CaF2 amplifier // Optics Letters 2009, Vol. 34, No. 13, p. 132075-3.
Pugžlys A., Andriukaitis G., Sidorov D., Irshad A., Baltuška A., Lai W.J., Phua P.B., Su L., Xu J., Li R., Ališauskas S., Marcinkevičius A., Fermann M.E., Giniūnas L., Danielius R., Spectroscopy and lasing of cryogenically cooled Yb, Na:CaF2 // Applied Physics B 2009, Vol. 97, p. 339-350.
Ališauskas S., Butkus R., Pyragaitė V., Smilgevičius V., Stabinis A., Piskarskas A., Optical parametric amplifier of chirped pulses pumped by two and three beams // Proc. of SPIE 2009, Vol. 7501, p.75010B-1-7.
Šviesolaidžių optika : vadovėlis aukštųjų mokyklų studentams / Daumantas Čiplys, Arūnas Krotkus, Valerijus Smilgevičius. - Vilnius : VU leidykla, 2008. - 186 p. - ISBN 978-9955-33-342-5
Orlov S., Stabinis A., Smilgevičius V., Valiulis G., Piskarskas A., Parametric excitation of X-waves by downconversion of Bessel beams in nonlinear crystals // Opt. Lett. 2007, Vol. 32, No. 1, p. 68-70.
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