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Quantum Design Oxford Microstat Optical Cryostats

Optical Cryostats for Microscopy

Microstat Optical Cryostats

Our Microstat range of optical cryostats provides cryogenic sample environments with a variety of design and performance characteristics. Available as liquid Nitrogen and liquid Helium flow cryostats with sample-in-vacuum environment and sample temperatures from <2.2K to 500K. The Microstat range offers some of the most efficient and cost-effective cryostats for Optical Microscopy. They are equally suited to work in any orientation on an optical bench or integrated into a commercially available microscope. We also offer a range of optical cryostats for spectroscopy.

  • Lowest cost of ownership
  • Market leading low vibration and high stability options
  • Touch screen controller with unique expansion capabilities
  • User upgradeable window flanges and controller channels

Models

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Microstat Model Comparison

Model MicrostatN MicrostatHe MicrostatHiRes
Cryogen Nitrogen Helium (or Nitrogen) Helium (or Nitrogen)
Sample Environment Vacuum Vacuum Vacuum
Base Temperature 77 K 3.2 K 3.4 K
Minimum Temperature 77 K 2.2 K* 2.7 K*
Maximum Temperature 500 K 500 K 500 K
Temperature Stability (Period) ± 0.5 K (10 mins) ± 0.1 K (10 mins) ± 0.1 K (10 mins)
Sample Space Diameter x height (mm) 20 x 2 20 x 5 20 x 5
Working Distance (mm) 2 4.5 - 5.5 2.2 - 2.7
Cooldown from Room Temperature < 10 mins < 10 mins < 15 mins
Cryogenic Consumption (l/h) ~ 4.2K (80K for LN2) < 0.5 l/h < 0.45 l/h < 0.7 l/h
Vibration < 0.1 μm < 0.1 μm < 20 nm
Lateral Sample Drift at Constant Temperature < 1 μm/h < 1 μm/h < 150 nm/h
Customer Wiring 4 dc 10 dc 10 dc

* With 40m3 Rotary Pump Option
** Typical, in conjunction with loca vibration mitigation practices.

Microstat Applications

Windows for Optistat Cryostats

Microstat window materials transmission data

Our cryostats are supplied with Spectrosil B windows as standard providing good transmission from UV to mid-IR wavelengths.

In addition. we can supply a range of window materials to suit applications from UV through the extreme IR and THz wavelengths.

All windows are user-changeable and allow you to configure your experiment with the best transmission characteristics for each of the available optical ports.

View our Optical Cryostats Windows Tool.

Designed to Minimize Vibration and Sample Drift

MicrostatHiRes - Designed to Minimize Vibration and Sample Drift
  • The MicrostatHiRes (High Resolution) cryostat has been designed specifically to minimize vibration and sample drift at constant temperatures. This is achieved by cooling the sample on a stable cold platform with a concentric heat exchanger rather than the use of a cold finger design and the addition of a capillary feed for helium flow.
  • Vibration specifications have been measured using a Leo 1450VP scanning electron microscope at Oxford Instruments NanoAnalysis UK. The results obtained showed that, when all system components have been securely held, the vibration levels recorded were better than 20nm.
  • Such low vibration characteristics make the MicrostatHiRes the ideal cryostat for sub-micron sample sizes and applications such as Micro-Raman, Micro-Photoluminescence and Micro-FTIR

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