TY - JOUR
T1 - Formation and fixing of diffraction gratings in new photorefractive lead barium niobate (Pb1-xBaxNb2O6) crystals
AU - Lee, Myeongkyu
AU - Feigelson, Robert S.
AU - Liu, Alice
AU - Hesselink, Lambertus
PY - 1998/2
Y1 - 1998/2
N2 - Lead barium niobate (Pb1-xBaxNb2O6) crystals have been grown by the vertical Bridgman method, and the formation and thermal fixing of photorefractive gratings in these crystals were investigated. A diffraction efficiency of 8.5% was achieved in a 2.3 mm thick Pb0.5Ba0.5Nb2O6 crystal. As-grown crystals contained a high concentration of protons (H+) essential for the thermal fixing of gratings. In addition, the proton concentration could be increased by heat treatment in a humid atmosphere and decreased in an ambient or oxygen atmosphere. The fixing efficiency increased with increasing proton concentration.
AB - Lead barium niobate (Pb1-xBaxNb2O6) crystals have been grown by the vertical Bridgman method, and the formation and thermal fixing of photorefractive gratings in these crystals were investigated. A diffraction efficiency of 8.5% was achieved in a 2.3 mm thick Pb0.5Ba0.5Nb2O6 crystal. As-grown crystals contained a high concentration of protons (H+) essential for the thermal fixing of gratings. In addition, the proton concentration could be increased by heat treatment in a humid atmosphere and decreased in an ambient or oxygen atmosphere. The fixing efficiency increased with increasing proton concentration.
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M3 - Article
AN - SCOPUS:0032363606
SN - 0374-4884
VL - 32
SP - S427-S429
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
IS - SUPPL. 2
ER -