Spatiotemporal toroidal waves from the transverse second-harmonic generation

被引：13
|
作者：
Saltiel, Solomon M. [1 ,2 ,3 ]
Neshev, Dragomir N. [1 ,2 ]
Fischer, Robert [1 ,2 ]
Krolikowski, Wieslaw [1 ,2 ]
Arie, Ady [4 ]
Kivsharl, Yuri S. [1 ,2 ]
机构：
[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Ctr Ultra High Bandwidth Devices Opt Syst, Nonlinear Phys Ctr, Canberra, ACT 0200, Australia
[2] Australian Natl Univ, Res Sch Phys Sci & Engn, Ctr Ultra High Bandwidth Devices Opt Syst, Laser Phys Ctr, Canberra, ACT 0200, Australia
[3] Univ Sofia, Fac Phys, Dept Quantum Elect, BG-1164 Sofia, Bulgaria
[4] Tel Aviv Univ, Sch Elect Engn, Fac Engn, IL-69978 Tel Aviv, Israel
来源：
OPTICS LETTERS | 2008年 / 33卷 / 05期
关键词：
D O I：
10.1364/OL.33.000527
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the second-harmonic generation via transversely matched interaction of two counterpropagating ultrashort pulses in chi((2)) photonic structures. We show that the emitted second-harmonic wave attains the form of spatially expanding toroid with the initial thickness given by the cross correlation of the pulses. We demonstrate the formation of such toroidal waves in crystals with random ferroelectric domains as well as in annularly poled nonlinear photonic structures. (c) 2008 Optical Society of America.
引用
收藏
页码：527 / 529
页数：3
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