The asymmetry between the domain walls of periodically poled lithium niobate crystals |
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| Affiliation: | 1. Moscow State University of Technology “STANKIN”, Vadkovskii per., 3a, Moscow 127005, Russia;2. National Research Nuclear University MEPhI, Kashirskoe sh., 31, Moscow 115409, Russia;3. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky Prospekt 49, Moscow 119991, Russia |
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| Abstract: | The domain walls of periodically poled lithium niobate (PPLN) crystals were investigated using Raman spectrum mapping. The periodical changes of Raman shift in several Raman lines along the period of PPLN have been found. The experimental results show that the domain reversal has different degree of affection on its two neighbor regions, which is related to the asymmetry of crystal lattice. This phenomenon can be used to examine the periodical domain reversal of LN non-contacted, non-destructive and easily operated. |
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