General Specifications


ultra low vibration, closed-cycle cryostat intimately integrated into optical table, optical table included

sample environment

cryogenic vacuum, sample cooled via braids (ATC100)

sample space

75 mm (diameter)

sample exchange

easy access via removal of vacuum shroud


fully automated temperature control (vacuum, cooldown, T control, warmup), all pumps integrated, USB interface for remote control

vibration & acoustic noise damping system

proprietary low vibration design

Performance Data

temperature range

3.8 .. 320 K (depending on configuration)

Base pressure (in sample chamber)

<5e-6 mbar

leak rate of vacuum

< 5e-9 mbar l/s

cool down time (incl. pumping time)

< 4.5 h to 5 K (depending on thermal load)

temperature stability

< 15 mK (peak-to-peak with damped sample mount)

cooling power at cold plate

>170 mW @ 5 K

vibration level (cold plate, vertical)

< 5 nm (peak-to-peak@1500 Hz)

Closed-Cycle Cooler

power consumption

max. 3 kW

cooling of compressor

water cooling (default; requires local infrastructure), air cooling (optional)

Size and Dimensions

optical table

standard size 900 mm x 1800 mm x 305 mm (leg height 597 mm); metric or imperial mounting threads (other table sizes available)

Options and Upgrades

temperature controller


pumping kit


vacuum shroud

Basic (standard shroud), RT-SWD, RT-USWD upgrade, LT-APO objective, HV objective, Photonic Probe Station, or customized height, diameter, windows & working distance

electrical access

36 customer wires included, heat sunk @ 4 K


electrical (DC, HF), optical fibers, gas capillary (on request)

sample motion

Premium Line positioners and scanners

cryostat compressor upgrade

air-cooled (grey-room recommended)


extension to 13 m or 20 m (instead of 6 m)


for active vibration isolation of table

Compatible Equipment

confocal microscopes

attoCFM I

confocal Raman microscopes

attoRAMAN (on request)

Cryogenic Photonic Probe Station

confocal microscope with 2 fiber probes for side excitation/detection

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