Title :
Switching from nonlinear beam focusing to defocusing in periodic structures
Author :
Bennet, Francis H. ; Amuli, Inés A. ; Neshev, Dragomir N. ; Sukhorukov, Andrey A. ; Krolikowski, Wieslaw Z. ; Kivshar, Yuri S.
Author_Institution :
Nonlinear Phys. Centre & Laser Phys. Centre, Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
We demonstrate experimentally the transition of nonlinear beam focusing to defocusing by varying the modulation depth of a periodic system. The observed effect illustrates the fundamental crossover when the periodic system changes properties to homogeneous.
Keywords :
Laser beams; Nonlinear optics; Optical modulation; Optical refraction; Optical variables control; Optical waveguides; Periodic structures; Physics; Refractive index; Temperature;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
