FTIR Nicolet iS50R with PM-IRRAS

FOM Name:  Spectrometer FTIR Nicolet iS50R
Model:  Nicolet iS50R
Contact: Anna Kiyanova (anna.kiyanova@wisc.edu, 608-263-1735)
Center:  SMCL
Location: B46 Engineering Hall

FT-IR spectrophotometer Nicolet iS50R with PM-IRRAS accessory is used to characterize adsorbed matter, self-assembled monolayers (SAMs), or thin coatings on reflective surfaces. Metal (gold), silicon, and glass substrates are typically used in grasing angle of incidence reflection geometry. Being a simplified version of an FT-IR ellipsometer, PM-IRRAS shows better sensitivity due to employing a liquid nitrogen cooled MCT detector.


This is an accordion element with a series of buttons that open and close related content panels.


  • Beamsplitter: mid-IR KBr
  • Wavelength range: 4000 – 650 cm-1 (limited by the ZnSe Photoelastic modulator)
  • Angle of incidence: 67 – 90°