ST-100 optical cryostat
Optical continuous flow cryostat suitable for a wide range of applications: the window material and geometry can be specified to allow spectroscopy with excitation energies from gamma rays through to the far-infrared.
Standard configuration
Designed for experiments requiring optical access to the sample, the Janis ST-100 includes the following components:
- Optical vacuum shroud
- Optical radiation shield
- Four (4) 1.625 in clear view quartz windows
- Optical sample holder
- One (1) 10-pin electrical feedthrough
- Three (3) blank feedthrough ports
- Temperature sensor
- 6 ft superinsulated cryogen transfer line
- System test
Typical applications:
- Matrix isolation
- Raman spectroscopy
- UV, VlS, IR, FTIR
- Optoelectric effect
- Photoluminescence
- Microphotoluminescence
- High Tc
- Microscopy
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ST-100 specifications
| Temperature range | ~2 K to 500 K (>700 K optional) | |
| Initial cooldown time | 15 min | |
| Nominal temperature stability (with controller) | 50 mK or less | |
| Orientation | any position (with increased helium consumption) | |
| System weight (without transfer line) | 10 lb (4.6 kg) | |
| Cryogen consumption on cooldown | 0.4 L LHe (325 to 4.2 K) 0.1 L LN2 (325 to 77 K) | |
| Nominal cryogen consumption rate | 0.6 L/h LHe (5 K) 0.1 L/h LN2 (100 K) | |
| NOTE: Specifications do not include optical or experimental heat loads and assume vertical orientation. Specifications may change depending on the length of the transfer line flexible section. | ||
Typical Cryogen Consumption of Optical SuperTran Cryostats
Other optical configurations:
- Special window geometry
- Optional fifth window
- High temperature (500 K), (700 K)
- Customized window materials
- Gas introduction ports
- Large diameter sample space
- Sample holder and wiring for DLTS
- Specially modified window block with large window options
Optional configurations
Photoluminescence of InGaAs/GaAs quantum dots using the HORIBA Scientific photoluminescence (PL) system with Janis cryostat
Special ST-100 SuperTran with rotatable vacuum shroud for matrix isolation
Special ST-100
This special ST-100 has two semi-rigid cables installed from the top flange to the sample area. It has a compact window block with (2) polyethylene windows and (2) fused quartz windows.
ConFlat flange to Ladish flange adaptor
The image shows a ConFlat flange/Ladish flange adaptor that allows an ST-100 to be installed on a UHV chamber with a 2.75 in ConFlat flange. Please note that while this is the easiest way to put an ST-100 onto a UHV chamber, the ST-100
will not be UHV compatible.
Standard window block with countersunk screw holes option
Janis Research usually uses pan-head screws on the retainers of window blocks, which add about 0.125 in into each side of the window block. In cases where space is an issue, talk to your sales engineer about countersunk screw holes in
the retainers so that flathead screws can be used, as shown in this photo. This option can be offered on most window blocks with o-ring sealed windows. The window block shown can be used on our models VPF-100, VPF-800, ST-100, CCS-150,
CCS-100/202, CCS-100/204, and SHI-4-2.
Modified window block
These photos show a standard ST-100 with a specially modified window block. Two of the windows are our standard 1.63 in diameter clear view fused quartz. The other two windows are a special 2.63 in diameter clear view fused quartz.
This window block can be used as an option on many other systems such as VPF-100, SHI-4-2, SHI-4-5, SHI-4, CCS-150, CCS-450, CCS-100/202, and CCS-100/204. (The CCS-100/204 use an optional large window using a different window block.) Contact sales@lakeshore.com for more information.
