CS204-DMX-20-OM
The CS204-DMX-20-OM is our ultra low vibration closed cycle cryostat for optical microscopy applications, such as micro-photoluminescence (Micro-PL).
The DMX-20 interface opens up a wide range of capabilities never before possible with a closed cycle cryocooler. The Micro-PL cryostat uses a helium exchange gas to decouple the sample space from the cold tip of the DE-204 cryocooler. This prevents almost all vibration from being transmitted to the sample space. Scientists have demonstrated vibration levels as low as 3-5 nm with our Micro-PL cryostat.
Because the exchange gas is inherently less efficient than cooling by conduction, the base temperature of the sample will be 1-2 K higher than the cryocooler. Additionally the DMX-20 interface requires a downward orientation of the cold tip to facilitate convective cooling of the exchange gas.
Applications
Micro-photoluminescence (Micro-PL)
Micro-Raman
Micro-spectroscopy
Micro-FTIR
Quantum dots
Low vibration optical experiments
Magneto-optical Kerr effect (MOKE)
Typical Configuration
2 helium hoses
DMX-20 ultra low vibration interface
Aluminum vacuum shroud with one window port for optical microscopy and electrical experiments
Nickel plated OFHC copper radiation shield
1 high purity quartz window
Instrumentation for temperature measurement and control:
10 pin hermetic 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 sample measurement
Sample holder for micro-spectroscopy experiments
Temperature controller
Features
Ultra low vibrations (3-5 nm)
Supports working distances as small as 1.5 mm
Continuously adjustable sample holder (1.5 - 7 mm)
Low profile windows
Cold tip down orientation
Fully customizable
Options & Upgrades
Transmission experiment upgrade
Rotatable sample platter upgrade
Magnet post upgrade
4 K cold head (0.2 W @ 4.2 K)
5.5 K cold head (3 W @ 10 K)
Turbo upgrade for faster cooldown times
High temperature interface (not required with the DMX-20 interface, but helpful for high temperature performance)
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)