Optistat CF



  • Temperature range: 3.4 - 300 K. May be extended up to 500 K with the high-temperature window option and extended down to 2.2 K when used with a rotary pump (not supplied as standard)
  • Cooling to 4.2 K in about 25 minutes
  • Short sample change time via a top-loading sample probe - as quick as 5 minutes
  • Low liquid helium consumption: <0.55 L/h when used with a low-loss transfer siphon
  • Configured for reflectance and transmission measurements
  • Superb optical access for measurements requiring light collection
  • Large illumination area: 15 mm diameter window aperture
  • Compact size allowing easy integration into commercial spectrometers
  • Measurement-ready, via 10-pin electrical wiring to the sample
  • Supplied with a MercuryiTC temperature controlle


  • Low cryogen consumption: Brings significant benefits in terms of running cost
  • Quick experiments: A range of sample holders and probes, including liquid cuvettes sample holders and height adjust/rotate probes, are available
  • Simple: The experimental windows and sample holders can be easily changed
  • Versatile: A range of window materials are available.
  • Superior performance: A dynamic exchange gas model, suitable for low conductivity or high heat load samples, is available. Please contact your local sales representative for more information
  • Software control: Oxford Instruments electronics products are controllable through the software using RS232, USB (serial emulation), TCP/IP or GPIB interfaces. LabVIEW function libraries and virtual instruments are provided for Oxford Instruments electronics products to allow PC-based control and monitoring. These can be integrated into a complete LabVIEW data acquisition system


  • Temperature range: 3.4 to 300 K, may be extended up to 500 K and down to 2.3 K
  • Temperature stability: ± 0.1 K
  • System may also be run with liquid nitrogen, temperature range: 77 to 500 K
  • Liquid helium consumption rate at 4.2 K: < 0.55 l/hr
  • Cool down consumption: 1.5 litre (nominal)
  • Room Temperature to base temperature: approx. 25 min with pre-cooled transfer siphon
  • Sample change time: approx. 5 min (sample can be changed with the cryostat cold)
  • Weight: 3.7 kg

A typical system comprises of:

  • Cryostat
  • Sample holder
  • Spectroscopy windows 
  • MercuryiTC temperature controller


  • UV / Visible spectroscopy: Experiments at low temperatures reveal the interaction between the electronic energy levels and vibrational modes in solids.
  • Infra-red spectroscopy: Low temperature IR spectroscopy is used to measure changes in interatomic vibrational modes as well as other phenomena such as the energy gap in a superconductor below its transition temperature.
  • Raman spectroscopy: Lower temperatures result in narrower lines associated with the observed Raman excitations.
  • Photoluminescence: At low temperatures, spectral features are sharper and more intense, thereby increasing the amount of information available.

Optistat CF
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