Interaction between Two-Dimensional White-Light Photovoltaic Dark Spatial Solitons
LIU Zhao-Hong, LIU Si-Min, GUO Ru, GAO Yuan-Mei, SONG Tao, ZHU Nan, QU Di
Photonics Center, College of Physics Science, Nankai University, Tianjin 300071
The Key Lab of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials (Ministry of Education), Nankai University, Tianjin 300457
Interaction between Two-Dimensional White-Light Photovoltaic Dark Spatial Solitons
LIU Zhao-Hong;LIU Si-Min;GUO Ru;GAO Yuan-Mei; SONG Tao;ZHU Nan;QU Di
Photonics Center, College of Physics Science, Nankai University, Tianjin 300071
The Key Lab of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials (Ministry of Education), Nankai University, Tianjin 300457
摘要Using fully incoherent white light emitted from an incandescent bulb (a line source) and amplitude mask, we study experimentally the interaction between two 2D white-light photovoltaic dark spatial solitons with three different separations (40μm, 50μm and 60μm) and arrangement directions (parallel to, perpendicular to and tilted at 45° with respect to the crystalline c axis) propagating in parallel in close proximity in self-defocusing LiNbO3:Fe crystal. Experimental results reveal that a 2D white-light dark soliton pair only experiences attractive forces when their mutual separation is sufficiently small (<60μm), and the degree of the attraction depends on their mutual separation and their arrangement direction. When the separation is larger than 60μm, the interaction is not evident.
Abstract：Using fully incoherent white light emitted from an incandescent bulb (a line source) and amplitude mask, we study experimentally the interaction between two 2D white-light photovoltaic dark spatial solitons with three different separations (40μm, 50μm and 60μm) and arrangement directions (parallel to, perpendicular to and tilted at 45° with respect to the crystalline c axis) propagating in parallel in close proximity in self-defocusing LiNbO3:Fe crystal. Experimental results reveal that a 2D white-light dark soliton pair only experiences attractive forces when their mutual separation is sufficiently small (<60μm), and the degree of the attraction depends on their mutual separation and their arrangement direction. When the separation is larger than 60μm, the interaction is not evident.
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2007, Vol. 24 
