Part of the Oxford Instruments Group


A 4 K helium-flow, sample-in-vacuum cryostat system. 

  • 3.2 K - 500 K temperature range

  • Quick cool-down time and low helium consumption

  • Superb optical access

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The Optistat range of cryostats are designed to meet the needs of the most demanding spectroscopy applications. Excellent optical and electrical access, wide temperature ranges, compact design and best-in-class cryogenic performance are matched to an extensive range of different options to ensure there is a cryostat perfectly matched to your experimental requirements. They offer different sample environments to best suit the requirements of your sample, and different cooling technologies to meet the needs of your laboratory.

  • 3.2 K - 500 K temperature range. May be extended down to 2.2 K when used with a rotary pump (not supplied as standard)
  • Cooling to 4.2 K in about 10 minutes
  • Low liquid helium consumption, <0.45 L/h when used with a low-loss transfer siphon
  • Large sample space for studying samples with a wide range of size and geometry
  • Configured for reflectance and transmission measurements
  • Minimal number of windows in the optical path, reducing reflective losses
  • Superb optical access (f/0.9) for measurements requiring light collection
  • Large illumination area: 23 mm diameter window aperture
  • Demountable radiation shield windows to maximise transmission intensity
  • Compact size allowing easy integration into commercial spectrometers
  • Measurement-ready, via 10-pin electrical wiring to the sample
  • Supplied with a MercuryiTC temperature controller
  • 1 year standard warranty

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. Please contact your local sales representative for more information

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

Versatile: The OptistatCF-V “cold unit” is interchangeable between the MicrostatHe and MicrostatHe-R, enabling a modular set of optical cryostats for huge experimental flexibility


Temperature range: 3.2 to 500 K, may be extended down to 2.2 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: < 0.45 l/hr

Cool down consumption: 1.3 litre (nominal)

Room Temperature to base temperature: approx. 10 min with pre-cooled transfer siphon

Sample change time: approx. 60 min (sample can be changed with the cryostat cold)

Weight: 2 kg

A typical system consists of:

  • Cryostat
  • Temperature Controller
  • Accessories and Manuals
  • Software

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.

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