The CS204-FMX-1AL offers a wide range of flexibility at a low cost, making it an excellent choice for most sample and device testing. This system has similar features to the CS202-DMX-1AL, however it provides almost twice the cooling capacity. Consequently this system is less sensitive to experimental and parasitic heat load changes arising from sample size, number of wires, number of windows, etc.

The CS204-FMX-1AL is powered by our DE-204 series closed cycle cryocooler. These liquid helium-free cryostats use a pneumatically driven Gifford-McMahon cycle to cool the sample.


  • Optical
  • Electro-optical
  • Raman
  • UV, VIS, IR
  • FTIR
  • Electro & photoluminescence
  • Resistivity/Hall probe experiments
  • Diamond anvil cell
  • Magneto-optical
  • Thermal, electrical and magnetic susceptibility
  • Magneto-optical Kerr effect (MOKE)



Typical Configuration


Options & Upgrades

  • Cryogen free
  • Low cost aluminum construction
  • Large, clear view optical windows (1.25 in.)
  • Large sample viewing angle for optical collection (F/1)
  • Can operate in any orientation
  • Fully customizable


  • Cold head (DE-204AE)
  • Compressor (ARS-4HW)
  • 2 helium hoses
  • Aluminum vacuum shroud with 4 window ports for optical and electrical experiments (FMX-1AL)
  • Aluminum radiation shield
  • 2 high purity quartz windows
  • Instrumentation for temperature measurement and control:
    • 10 pin feedthrough
    • 50 ohm thermofoil heater
    • Silicon diode sensor curve matched to (± 0.5 K) for control
    • Calibrated silicon diode sensor (±12 mK) with 4 in. free length for accurate for sample measurement
  • Wiring for electrical experiments:
    • 10 pin feedthrough
    • 4 copper wires
  • Sample holder for optical and electrical experiments
  • Temperature controller