Our high stability microscopy 4 K cryostat is lowest vibration helium cooled optical cryostat for microscopy on the market

High stability microscopy 4 K cryostat - MicrostatHires2

  • Ideal for Quantum Dot applications
  • Sample environment in vacuum, continuous flow 
  • Extremely low sample vibration and drift to maintain high resolution measurements over many hours
  • 2.7 - 500 K temperature range
  • Very short working distance  – only 2.2 mm
  • Compact, light weight system  – only 1.5 kg, and less than 49 mm deep
  • Choice of reflectance (one window) or transmission (two windows) configuration
  • Supplied with the new MercuryiTC temperature controller

Typical applications include:


  • micro-Raman and micro-photoluminescence (µPL) mapping of semiconductor microstructures with sub-micron spatial resolution
  • µPL quantum dot (QD) measurements  – even down to single-photon counting


Optical Specifications Reflectance
Window thickness 0.5 mm 1.5 mm
Clear access diameter 10 mm 25 mm
Sample holder to window top surface 2.2 mm 2.2 mm
Angle of admittance (to surface of sample holder at centre) 142o 166o
Max sample thickness 5 mm 4 mm
Max sample diameter 20 mm 20 mm

All dimensions are approximate and relate to top window with plain sample holder in central position.

System Components/Options


  • A wide range of window materials can be fitted to the MicrostatHiRes - see the 'Windows for optical cryostats guide' in Downloads and Links
  • A 0.5 mm thick Spectrosil B quartz window with 10 mm clear access is fitted as standard. We also offer an option for a 25 mm access diameter window with a thickness of 1.5 mm
  • Transmission experiments use an alternative bottom flange with a second window fitted and a transmission sample holder
  • Additional or replacement window flanges available via the Oxford Instruments Direct - Cryospares® online catalogue

Pump options

  • A simple GF4 oil-free vane pump is supplied for operation to 3.2 K
  • Lower temperatures to 2.7 K use an EPS40 single-stage rotary pump

Magnetic field options

  • The MicrostatHiRes can also be fitted/retrofitted with a pillar for easy integration in a room temperature bore superconducting magnet or an electromagnet (see Images); the standard cap and the pillar are interchangeable
  • For an integrated 5 T magnetic field solution see the MicrostatMO



The MicrostatHiRes optical cryostat works on a continuous flow principle using an oil-free pump to draw liquid helium from a storage vessel along a transfer tube to the heat exchanger ('pull mode'). Temperature control is achieved by a combination of automatic or manual helium flow control and power dissipated in an electrical heater, regulated using a temperature controller.

The cryostat can also be used in 'push mode', in that case the flow of liquid helium is generated by pressurising the storage dewar. The advantage is that the need for a gas flow pump is removed, eliminating the vibration and noise generated by the pump and reducing system cost.


Transfer tube - It plays an important part in the overall helium consumption and base temperature capability of helium cooled cryostat. 

Oxford Instruments Low Loss Transfer tubes (LLT) use the cold gas exiting the cryostat to cool the shields surrounding the incoming liquid within the transfer tube.  As a result, the consumption of our cryostats is the lowest on the market, dramatically reducing your running costs.

We can also offer an extra flexible transfer tube for those with restricted space in their labs.  Please note that as this does not use the gas cooled mechanism, helium consumption will be higher that for the LLT range.  However it will be well suited to those who need lightweight and more flexible transfer tube.

Gas flow controller - The VC-U gas flow controller now includes the nitrogen and helium flow meters as standard.

Intelligent cryogenic environment controller - Easy monitoring and control of the sample stage.  The MercuryiTC controller combines several instruments into one allowing temperature control at the heat exchanger and gas flow control as well as an extra sensor channel for thermometry measurement directly at the sample stage.  Everything can be accessed through touch screen front panel and remotely.

Example MicrostatHe2: You can control the temperature with a sensor and heater at the heat exchanger, monitor and control the gas flow, AND have an extra sensor channel to measure sample temperature.

NEW Magnet power supply - Best in class stability performance and optimised for accuracy and low noise. 

New Oxsoft IDK instrument development kit software - With the new Oxsoft IDK, you have new levels of control.  You can design remote control and configuration programs and integrate your system into your preferred experiment control architecture.



Downloads & further information

To download our Microstat product guide click here


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