1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, China.
2 National Synchrotron Radiation Laboratory, University of Science and Technology of China, China.
Appl Spectrosc. 2018 Oct;72(10):1498-1502. doi: 10.1177/0003702818788828. Epub 2018 Jul 26.
The equivalent parameters function in Macleod software can be used to calculate the equivalent admittance and phase thickness of multilayers, even when the material is both absorbing and dispersive, and the incidence angle is non-zero. We utilized this software to design first-order 121.6 nm minus filters based on a lanthanum trifluoride (LaF)/magnesium fluoride (MgF) multilayer; a Gaussian-type target curve was also introduced into the design. Minus filters with bandwidths of 10 and 5 nm were obtained and had good visible light suppression and low side-lobe ripples. This designed filter will be fabricated for use in a Lyman-alpha coronagraph and imager installed in the Lyman-Alpha Solar Telescope, which will be launched by China in 2021.
Macleod 软件中的等效参数功能可用于计算多层膜的等效导纳和相位厚度，即使材料是吸收性和色散性的，并且入射角不为零。我们利用该软件设计了基于氟化镧（LaF）/氟化镁（MgF）多层膜的一阶 121.6nm 带阻滤波器；设计中还引入了高斯型目标曲线。得到了带宽为 10nm 和 5nm 的带阻滤波器，具有良好的可见光抑制和低旁瓣波纹。该设计的滤波器将用于 2021 年中国发射的 Lyman-α 太阳望远镜中的 Lyman-α 日冕仪和成像仪。
