Opto-Mechanics · Cryogenic Piezo Stages - Rotators
Rotator35-Optic
High-load cryogenic rotary optic stage; 35 x 35 x 16.5 mm body; 6 mm center aperture; 360 deg endless rotation; 500 g payload.
Datasheet (PDF) ↗CAD Model (STEP) ↗Specifications
| Active axes | Rz |
|---|---|
| Footprint × hight | 35 x 35 mm |
| Mass | 45 g |
| Work environment | Default:1.4 K~ 400 K, 1e-7 mbar, 35 Tesla |
| Mainbody | Default: Pure Ti, ULT: BeCu |
| Wires | Phosphor Bronze Twisted Paired Wires, 20cm |
| Pin materials | Polyster (glass fiber filled), BeCu |
| Pins number | Drive -2 pins, Sensor- 3 pins |
| Travel Range | 360° endless |
| Max. Load | 500 g |
| Dynamic Torque | 2.5 N.cm |
| Max. Velocity @300 K | 10°/s |
| Sensor | Resistive Sensor |
| Sensor range | 320° |
| Sensor resolution | 10 m° |
| Sensor Repeatibility | 50 m° |
| Fine Tune Resolution @2 K* | 3 u° |
| Step Size (min) @300 K* | 0.3 m° |
Applications
Angle-resolved spectroscopy
Rotate a sample through orientation series without warming the cryostat.
Polarisation studies at low temperature
Sweep crystal axis relative to a fixed polarisation to separate anisotropic responses.
Field-angle dependence
Change sample orientation relative to an applied magnetic field inside the bore.
Specifying this part
What this model has to survive, and what it needs around it
Endless coarse rotation, fine tuning in µ°
Continuous 360° coarse rotation with fine adjustment in the single-digit µ° range at 2 K, which is what angle-resolved spectroscopy and polarisation work inside a cryostat need. Optic variants carry a Ø6 mm clear aperture for transmission along the rotation axis.
Heat load at the cold plate
Stick-slip inertial drives dissipate energy per step and draw no holding current once stopped, so the steady-state load on the mixing chamber is the wiring loom rather than the motor. Anchor the loom at each temperature stage and thermalise the moving body with an FTC copper braid.
Non-magnetic construction
Titanium bodies and BeCu fasteners throughout, rated for operation to 35 T and down to 30 mK with the .ULT option, at 2 × 10⁻¹¹ mbar with .UHV. A single steel screw substituted at installation is enough to compromise a high-field assembly.
Full series comparison, controller pairing and mounting hardware on the cryogenic piezo stages overview, or work through the selection with the configurator.
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General-purpose cryogenic rotary stage; 25 x 25 x 16.5 mm body; 360 deg endless rotation; 250 g payload; 4 microdeg fine-step resolution.
Rotator25-Optic
Cryogenic rotary optic stage; 25 x 25 x 16.5 mm body; 6 mm center aperture; 360 deg endless rotation; 250 g payload.
Rotator35
High-load cryogenic rotary stage; 35 x 35 x 16.5 mm body; 360 deg endless rotation; 500 g payload; 3 microdeg fine-step resolution.
