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ST-500 Microscopy Cryostat

The Janis ST-500 continuous flow cryostat has been specially designed for use in microscopy, imaging, and high spatical resolution photoluminescence. The combination of low thermal-expansion support structure and internal vibration isolation results n ultra-low 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.

The ST-500 system includes a flexible high-efficiency variable flow cryogen tranfer line. This line delivers liquid helium or liquid nitrogen to a two-stage heat exchanger and sample mount. The ST-500 is portable, easily mounted in a variety of configurations and can be used both in transmission and reflection geometries.


Options include:
  • A variety of window materials and sizes
  • Interchangeable sample mounts for different sample thicknesses
  • Electrical and RF feedthroughs
  • A complete system solution including temperature controllers, pumping systems and storage dewars
Temperature Range
(continuous) 　		 3.5-325K (standard)
3.5-400K (optional)*
Initial Cooldown Time 10K (LHe):
80K (LN2):		 25 minutes
30 minutes
Cryogen Usage on Cooldown 1l LHe
0.3l LN2
Temperature Stability
(with temperature controller)		 <50 mK
Weight (not including transfer line) 7lbs (3.2kg)
Nominal Cryogen Usage LHe@5K:
LN2@80K: 		〜1.1 l/hr
〜0.1 l/hr
Nominal Vibrational Amplitude†, ‡ ±25nm
Positional Drift ‡ ±50nm in 5 minutes
±150 nm in 30 minutes

* Consult with us for details
† Vibrational amplitude measured while on isolated optical table. Results may vary depending on experimental conditions.
‡ Data courtesy of B.B. Goldbuerg and M.S. Unlu, Departments of Physics, ECE and Photonics Center, Boston University.

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