ニトロシル錯体結晶の光誘起準安定状態における特異な光学的性質<総説　レビュー>

概要

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The metastable state of Na2[Fe(CN)5 NO]・2H2O crystals produced by irradiation with green or blue laser light was investigated using X-ray diffraction and spectroscopic methods. A thin crystalline plate in the metastable state placed between a pair of polarizers works as the band-pass or band-reject filter depending on the cross or parallel alignment of polarizers. A novel feature of this effect is that the band center orresponds with wavelength of the laser applied for producing the metastable state, i.e ., the sample remembers the wavelength of the rradiated light. This phenomenon is explained based on spatially modulated refractive indexes produced by the photorefractive effect of laser irradiation. Numerical calculations using the Berreman's 4 × 4 matrix method show that the spatially modulated population of the metastable anion exists even in the otostationary state. Similarity with the Sŏlc birefringent filter is also discussed.
埼玉大学分析センターの論文