Low frequency peculiarities of the photorefractive response in sillenites

T.E. McClelland, David J. Webb, B.I. Sturman, M. Mann, K.H. Ringhofer

Research output: Contribution to journalArticlepeer-review


We investigate experimentally and theoretically the dependence of the amplitude of the spatial fundamental grating, created by a pair of coherent light beams while using the running grating technique [M.P. Petrov, S.I. Stepanov and A.V. Khomenko, Photorefractive Crystals in Coherent Optical Systems, Springer Series in Optical Sciences (Springer, 1991); P. Refregier, L. Solymar, H. Rajbenbach and J.P. Huignard, J. Appl. Phys. 58 (1985) 45], as a function of detuning frequency and beam ratio ß in photorefractive Bi12SiO20. It is shown that for ß > 0.05, in addition to the main peak in the frequency dependence of the amplitude, there is an additional peak of lower frequency which, as a rule, dominates the main peak. The position of the main peak depends on ß. The experimental results are in good agreement with the theoretical analysis and the general ideas about excitation and nonlinear interaction of weakly damped space-charge waves.
Original languageEnglish
Pages (from-to)371-377
Number of pages7
JournalOptics Communications
Issue number4-6
Publication statusPublished - 1 Jan 1995


  • dependence
  • amplitude
  • spatial fundamental grating
  • coherent light beams
  • running grating technique
  • detuning frequency
  • beam ratio β
  • photorefractive Bi12SiO20


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