Optical Cryostat - Low Power, ULV
The CS202F-DMX-20 opens up a wide range of possibilities never before possible with a closed cycle cryocooler. The DE202F-DMX-20 uses a Helium Exchange Gas to decouple the sample from the cold tip of the DE202 Cryocooler. This prevents almost all vibration from being transmitted to the sample. Sample vibration levels of 3-5nm have been demonstrated by users. Due to the exchange gas being less conductive, the base temperature will increase by 1-2K and the cooling capacity is roughly cut in half at varying temperatures.
Features 
ltra Low Vibrations (3-5 nm) 
Pop-Off optical block for easy in-situ sample change 
Beryllium and Kapton windows available for Mössbauer experiments 
Large clear view optical windows (1.25 in) 
Large sample viewing angle for optical collection (F/1.4) 
Cold Tip Down Orientation 
Fully customizable
Typical Configuration 
  • Cold head (DE-202AF) 
    Compressor (ARS-4HW) 
2 Helium Hoses  Aluminum vacuum shroud with 4 window ports for optical and electrical measurements with 4 window ports on a pop-off optical block 
Nickel Plated OFHC copper radiation shield 
2 High purity quartz windows  I
nstrumentation for temperature measurement and control:
       10 pin hermetic feed through
       50 ohm thermofoil heater
       Silicon diode sensor curve matched to (±0.5K) for control
       Calibrated silicon diode sensor (±12 mk) with 4 in. free length for accurate
       sample measurement. 
Wiring for electrical experiments:
       10 pin hermetic feed through
       4 copper wires 
Sample holder for optical and electrical experiments 
Temperature Controller
Key Applications
  • Mössbauer 
  • Low Vibration Optical Experiments 
  • Quantum Dots 
  • Photoluminescence (PL) 
  • Micro-Raman (Micro-PL) 
  • Micro-Spectroscopy 
  • Magneto Optical Kerr Effect (MOKE) 
  • Nanoscience 
  • Ellipsometry
Options and Upgrades 
4K Coldhead (0.2W @ 4.2K) CS204SF-DMX-20 (DE-202S not recommended) 
5.5K Coldhead (3W @ 10K) CS204PF-DMX-20 (DE-202P not recommended) 
450K High Temperature Interface 
800K High Temperature Interface 
Turbo upgrade for faster cooldown times 
Custom temperature sensor configuration (please contact our sales staff 
Custom wiring configurations (please contact our sales staff) 
Window material upgrades (custom materials available) 
Sample holder upgrades (custom sample holders available)
Compressor Model.PNG