【摘 要】
：
Multilayer dielectric thin films have polarization effects at non-normal incidence. In this letter, specifications include s- and p-polarization transmittance (Ts,(p) ≥ 95% at 790—808 nm), s- and p-polarization reflectance (Rs,(p) ≥ 95% at 814—860 nm), an
【机 构】
：
NationalKeyLaboratoryofTunableLaserTechnology,InstituteofOpto-electronics,HarbinInstituteofTechnolog
【出 处】
：
ChineseOpticsLetters
论文部分内容阅读
Multilayer dielectric thin films have polarization effects at non-normal incidence. In this letter, specifications include s- and p-polarization transmittance (Ts,(p) ≥ 95% at 790—808 nm), s- and p-polarization reflectance (Rs,(p) ≥ 95% at 814—860 nm), angle of incidence (AOI) = 45°, air as incident medium, and BK7 glass as substrate. Based on the two chosen materials (Ta2O5 and SiO2), non-polarized edge filters are carried out using the design methods of the detuned multiple half-wave filters (exact design) and the needle optimization (numerical design). Exact design has a total of 112 layers and 12 cavities; optical thickness is 126 quartwaves at 860 nm. Numerical design has a total of 107 layers and 8 cavities; optical thickness is 91 quartwaves at 850 nm. Hence, the numerical design has less layers and thickness, thus meeting the same specifications of the exact design.
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