Progress on the NIST IR-vis-UV Fourier transform spectrometer

Abstract

Two years ago, NIST acquired a high-resolution Fourier transform spectrometer (FTS) from the Los Alamos National Laboratory [1, 2], The instrument has an unapodized spectral resolution of 0.0025 cm -1 . We currently have optics and detectors to cover the wavelength range 200 nm to 2.5 μ m, and will soon obtain a CaF 2 beamsplitter to extend the range to around 8 μ m and a KCL beamsplitter to cover the region 8-18 μ m.