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)
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
Micro-PL Cryostat: CS204-DMX-20-OM
- Cold head (DE-204AF)
- Compressor (ARS-4HW)
- 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