title: Broadband infrared beam splitter for spaceborne interferometric infrared sounder.
abstract: A broadband infrared beam splitter (BS) on ZnSe substrate used for the spaceborne interferometric infrared sounder (SIIRS) is studied in the spectral range of 4.44-15 μm. Both broadband antireflection coating and broadband beam-splitter coating in this BS are designed and tested. To optimize the optical properties and the stability of the BS, suitable infrared materials were selected, and improved deposition techniques were applied. The designed structures matched experimental data well, and the properties of the BS met the application specification of SIIRS.
authors.forename: Tianyan
authors.initials: T
authors.lastname: Yu
authors.forename: Dingquan
authors.initials: D
authors.lastname: Liu
authors.forename: Yang
authors.initials: Y
authors.lastname: Qin
mesh_terms: D001272:Atmosphere / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D058998:Remote Sensing Technology / Q000295:instrumentation*; D018531:Spacecraft / Q000295:instrumentation*; D017550:Spectroscopy, Fourier Transform Infrared / Q000295:instrumentation*