caa a22 4500 445369027 CHVBK 20180317142940.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s00340-010-4309-y doi (NATIONALLICENCE)springer-10.1007/s00340-010-4309-y Propagation of low-intensity Gaussian fields in photorefractive media with real and imaginary intensity-dependent refractive index components [Elektronische Daten] [M. Jones, E. Jaatinen, G. Michael] A theoretical analysis of a low power Gaussian field propagating in unbiased self-defocussing photorefractive media that includes both real and imaginary components of the intensity-dependent refractive index is presented. The analysis, which is in excellent agreement with experimental observations, shows that the imaginary component of the intensity-dependent refractive index can have a focussing effect independent of the focussing or defocussing effect of the real component of the intensity-dependent refractive index. These findings suggest that the imaginary component of the intensity-dependent refractive index is the cause of the previously observed apparent self-focussing in unbiased self-defocussing photorefractive media. Springer-Verlag, 2010 Jones M. Applied Optics and Nanotechnology, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, 4000, Brisbane, Australia aut Jaatinen E. Applied Optics and Nanotechnology, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, 4000, Brisbane, Australia aut Michael G. Applied Optics and Nanotechnology, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, 4000, Brisbane, Australia aut Applied Physics B Springer-Verlag 103/2(2011-05-01), 405-411 0946-2171 103:2<405 2011 103 340 https://doi.org/10.1007/s00340-010-4309-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4309-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jones M. Applied Optics and Nanotechnology, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, 4000, Brisbane, Australia aut NATIONALLICENCE 700 1- Jaatinen E. Applied Optics and Nanotechnology, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, 4000, Brisbane, Australia aut NATIONALLICENCE 700 1- Michael G. Applied Optics and Nanotechnology, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, 4000, Brisbane, Australia aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 103/2(2011-05-01), 405-411 0946-2171 103:2<405 2011 103 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer