Title :
Instability threshold and stability of non-hexagonal patterns in a photorefractive feedback system
Author :
Jander, Ph ; Kamps, O. ; Denz, C.
Author_Institution :
Inst. of Appl. Phys., Westfalischen Wilhelms-Univ., Munster, Germany
Abstract :
This study investigates spontaneous pattern formation in a single mirror feedback system with a photorefractive nonlinearity. This paper also presents a detailed experimental investigation of the instability threshold for a wide range of system parameters. Fourier filtering techniques are employed experimentally in order to determine the unstable transverse wave numbers for a given set of parameters. The results are compared with the predictions obtained by the linear stability analysis and numerical treatment of the model equations.
Keywords :
Fourier transform optics; nonlinear optics; optical feedback; optical filters; pattern formation; photorefractive materials; Fourier filtering techniques; instability threshold; linear stability analysis; nonhexagonal patterns; photorefractive feedback; photorefractive nonlinearity; single mirror feedback system; spontaneous pattern formation; unstable transverse wave numbers; Diffraction; Filtering; Mirrors; Optical feedback; Optical filters; Pattern formation; Photorefractive effect; Physics; Predictive models; Stability analysis;
Conference_Titel :
Quantum Electronics Conference, 2003. EQEC '03. European
Print_ISBN :
0-7803-7733-8
DOI :
10.1109/EQEC.2003.1313967
