Absolute Reflectance Transmittance Accessory for thin film analysis

Our ULART accessory is an easy to use absolute reflectance / transmittance accessory for near-normal angle of incidence measurements at the same position.
Absolute measurement of reflectance and transmittance measurements of flat specular samples


                  Transmittance Mode                                                             Reflectance Mode

Key features:

  • Transmittance and reflectance measurements with the same spot-size and beam geometry without moving the sample
  • Angle of incidence 8 degrees in both transmittance and reflectance
  • Minimum wavelength range 200 – 2,500 nm
  • Measurement accuracy < 0.2T% and < 0.5R% for a specular sample
  • Horizontal sample table of approximate size 100 x 150 mm (is also largest sample size)
  • Sample table surface is made of a plastic material (to prevent damaging the sample surface)
  • Beam size in the centre of the measurement aperture < 5 x 12 mm
  • Measurement aperture 10 x 15 mm (determined smallest sample size to approximately 15 x 20 mm)
  • Optical interfacing covered (protects mirrors against accidentally touching)

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