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Nonlinear coupling between axisymmetrically-polarized ultrashort optical pulses in a uniaxial crystal
Title: | Nonlinear coupling between axisymmetrically-polarized ultrashort optical pulses in a uniaxial crystal |
Authors: | Suzuki, Masato Browse this author | Yamane, Keisaku Browse this author →KAKEN DB | Oka, Kazuhiko Browse this author →KAKEN DB | Toda, Yasunori Browse this author →KAKEN DB | Morita, Ryuji Browse this author →KAKEN DB |
Issue Date: | 14-Jul-2014 |
Publisher: | Optical Society |
Journal Title: | Optics Express |
Volume: | 22 |
Issue: | 14 |
Start Page: | 16903 |
End Page: | 16915 |
Publisher DOI: | 10.1364/OE.22.016903 |
PMID: | 25090507 |
Abstract: | Nonlinear propagation of focused axisymmetrically-polarized ultrashort optical pulses along the optic axis in a uniaxial crystal is investigated experimentally and theoretically. The energy transfer between an azimuthally-polarized pulse and a radially-polarized pulse is observed. To analyze the nonlinear propagation, a general paraxial equation with a third-order nonlinearity for axisymmetrically-polarized pulses in a uniaxial crystal is derived and the extended Stokes parameters (ESPs) based on cylindrical coordinates are newly-introduced. The simulation results by using this equation, providing the calculated ESPs, well explain our experimental observations: 1) the energy transfer is attributed to the four-wave-mixing effect, reflecting the overlapping between the axisymmetrically polarized modes, 2) the variations of the polarization defined from the ESPs are clarified to be affected by the self-and the cross-phase modulations, which make the effective propagation length long or short. |
Rights: | ©2014 Optical Society of America |
Type: | article |
URI: | http://hdl.handle.net/2115/57184 |
Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 森田 隆二
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