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Автор(ы) : Vyunishev A. M., Aleksandrovsky A. S., Zaitsev A. I., Slabko V. V.
Заглавие : Cerenkov nonlinear diffraction of femtosecond pulses
Место публикации : J. Opt. Soc. Am. B: Optical Society of America, 2013. - Vol. 30, Is. 7. - P.2014-2021. - ISSN 0740-3224, DOI 10.1364/JOSAB.30.002014
Примечания : Cited References: 43. - The work was partially supported by the Grant of the President of the Russian Federation MK-250.2013.2, by RFBR through Grant No. 12-02-31167, by the Ministry of Education and Science of the Russian Federation (Contract No. 14.B37.21.0730), by Krasnoyarsk Regional Fund of Science and Technical Activity Support, by PSB RAS Project 2.5.2, and by SFU Grant F12.
Предметные рубрики: STRONTIUM BARIUM NIOBATE
2ND-HARMONIC GENERATION
PHOTONIC CRYSTAL
DOMAIN-WALLS
MODULATION
Аннотация: Cerenkov nonlinear diffraction of femtosecond pulses in one-dimensional nonlinear photonic crystal of strontium tetraborate was studied theoretically and experimentally in both frequency and time domains. Spectral features of second harmonic radiation were measured in the course of mapping the nonlinear photonic crystal structure. The local second harmonic spectrum demonstrates complex angular behavior within the beam cross section. The spectral width of the second harmonic radiation is found to be fundamental beam size-dependent, and optimal focusing should be used for exact conversion of the fundamental spectrum into the second harmonic one. Experimental results are in excellent agreement with calculations. Maximum second harmonic generation efficiency was up to 2.1% at pumping by a femtosecond oscillator. (C) 2013 Optical Society of America
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