Nonlinear coupling between axisymmetrically-polarized ultrashort optical pulses in a uniaxial crystal

• Suzuki, Masato

• Yamane, Keisaku

• Oka, Kazuhiko

• Toda, Yasunori

• Morita, Ryuji

抄録

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.

収録刊行物

• Optics Express

  Optics Express 22 (14), 16903-16915, 2014-07-14

  Optical Society

詳細情報

• CRID: 1050001339016924160
• NII論文ID: 120005476174
• HANDLE: 2115/57184
• ISSN: 10944087
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles