ラマン分光器光学系に対する反射防止処理の効果とその近似計算

概要

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With the purpose of reducing the reflectance of optical system in Raman spectrograph, surfaces of lens and prisms, 14 in all, are coated with MgF<SUB>2</SUB> anti-reflection film. The intensity of the Raman effect observed by the coated system increased about three times as much as that by uncoated one.<BR>By calculating the reflectance of coated and uncoated surfaces, the total transmittance of the optical system is estimated by (i) using a simple Fresnels formula and (ii) considering multiple reflections in lens system, and the effect of the coating thus calculated is compared with that obtained by observation. If most part of the light by multiple reflections is considered responsible to cause stray light and again if the effect of background produced by the stray light is taken into account and introduced into calculation, the obferved result is reasonably explained.
社団法人日本分光学会の論文