摘要
从制备工艺稳定性出发,设计的诱导金属滤光片的膜系结构与以往设计的膜系结构有所不同,即将n_L低折射率冰晶石间隔层改用n_H高折射率ZnS做间隔层。如果金属与间隔层结合良好,本文中给出的设计计算公式适合于做间隔层的任意膜层。通常膜系的透光率T是膜层厚度nd的函数T=f(nd)。高折射率n_H的膜层函数T_H=f(n_Hd)变化较快,低折射率n_L的膜层函数T_L=f(n_Ld)变化较慢,尤其是在膜层厚度接近λ_0/2的区域更为明显。实践证明选用高折射率ZnS做诱导金属银滤光片的间隔层比选用低折射率冰晶石做间隔层制备工艺稳定,产品合格率高。
The film system constitution of the induced metal filter descrided in this paper differs from that designed previously in the light of its stability of preparing process, that is, the cryolite spacing larger with low reffractivity, n_L,is substituted by ZnS spacing layer with high refractivity n_H. If there is a good binding between metal and spacing layer, the design equations given in the paper are available for any film as spacing layer. Usually, the transmissivity of film system, T, is the function of film thickness nd, T=f(nd). The variation rate of the function for high refractivity(n_H), film, T_H=f(n_Hd), is faster than that for low refractivity(n_L)film,T_L= f(n_Ld),and it is more obvious especially in the area of which the film thickness is near λ_0/2. It has been demonstrated that the preparing process for the spacing layer of induced metal filter made of ZnS with high refractivity is more stable than that of cryolite with low refractiviy, and its product has higher percent of pass.
出处
《应用光学》
CAS
CSCD
1991年第4期41-45,共5页
Journal of Applied Optics
