ST-500 microscopy cryostat

The Lake Shore ST-500 continuous flow cryostat is specially designed for use in microscopy, imaging, and high spatial resolution photoluminescence. The combination of the low thermal-expansion support structure and internal vibration isolation results in nanometer-scale vibration and drift levels. The cryostat geometry offers a short working distance (for use with high magnification optics) and permits mounting on common microscope stages and translators.


Lake Shore — environment by JANIS


  • Low vibration — 15 nm
  • Options for UHV
  • Options for nano-positioning stages
  • Can be used both in transmission and reflection geometries

ST-500 datasheet

ST-500 specifications

ST part numberOpticalSizeApplication-specificUHVVibrationMaximum temperature
ST-500 Microscopy 15 nm475 K
ST-500-UCUltra-compactMicroscopy 15 nm475 K
ST-500-UHV Microscopy15 nm475 K

Cooling typeLHe or LN2
Minimum temperature3.5 K
Maximum temperature325 K option for 475 K
VibrationOptions for low vibration
Optional vibration amplitude (nominal)†±15 nm
Positional drift‡±10 nm at 5 min; ±60 nm at 30 min
Sample environmentVacuum
Initial cooldown time15 min (to 5 K)
25 min to 10 K (LHe); 30 min to 80 K (LN2)

Cooldown cryogen usage to 4.2 K

1 L LHe; 0.3 L LN2
Cryogen usage (nominal)LHe at 5 K: ~1.1 L/h; LN2 at 80 K: ~0.1 L/h
Typical stability±50 mK
Weight (not including transfer line)7 lb (3.2 kg)

NOTE: Specifications do not include optical or experimental heat loads and assume horizontal orientation. Specifications may change depending on the length of the transfer line flexible section.
Vibrational amplitude measured while on an isolated optical table. Results may vary depending on experimental conditions.
Data courtesy of B. B. Goldberg and M. S. Unlu, Departments of Physics, ECE and Photonics Center, Boston University.