Compare Model Drawings, CAD & Specs Type Optic Diameter Motorized Axes Availability Price
8806
$2,640
In Stock
 8806 Platform Mount 3
In Stock
 $2,640
8808
$2,640
In Stock
 8808 Corner Mount 12.7 mm 3
In Stock
 $2,640
8807
$1,742
In Stock
 8807 Center Mount 25.4 mm 2
In Stock
 $1,742
8812
$2,640
In Stock
 8812 Gimbal Mount 25.4 mm 3
In Stock
 $2,640
8814
$1,682
2 Weeks
 8814 Gimbal Mount 25.4 mm 2
2 Weeks
 $1,682
8852
$1,966
In Stock
 8852 Corner Mount 50.8 mm 3
In Stock
 $1,966
8853
$1,966
Contact Us
 8853 Gimbal Mount 50.8 mm 3
Contact Us
 $1,966
8816
$1,972
In Stock
 8816 Gimbal Mount 50.8 mm 2
In Stock
 $1,972

Specifications

  • Angular Range
    ±4°
  • Thread Type
    8-32 (M4) CLR
  • Cable Length
    2.1 m
  • Angular Resolution
    0.7 µrad (model 8814 = 1.2 µrad)

Features

Compact Design

The compact Picomotor actuator housing adds only 0.75 in. (19.1 mm) to the overall thickness of the mounts, allowing these mounts to be located where needed on a crowded optical table or breadboard.

Easy-to-Use, Flexible Picomotor Controllers

Our Open-Loop Picomotor controllers and drivers are modular. You can daisy-chain up to 31 drivers together with four channels each, so you can have a network of up to 124 standard Picomotor actuators. You have two interface options with the controller system: hand pad or computer, both providing plug-and-play use. Alternatively, you may choose to use our TTL/Analog Picomotor driver.

Multi-Axis Adapter

The 8806, 8808, 8812, 8852 and 8853 mounts feature an RJ-11 (6-pin) connector and therefore require the 8725 multi-axis adapter to connect to a Picomotor controller. The adpater comes with one RJ-11 (6-pin) jack and three RJ-22 (4-pin) connectors.

How the Picomotor Design Works

Picomotor actuators rely on the basic difference between dynamic and static friction. An example of this is the magician's "tablecloth trick," in which a quick pull (low dynamic friction) of the cloth leaves the dishes on the table, while a slow pull (high static friction) would pull the dishes off the table and cause a big mess! Our Picomotor actuator uses the same principle with a threaded jaw, similar to two halves of a split nut, clamped around a precision 80-pitch screw. One jaw is connected to one end of a piezoelectric transducer, and the other jaw is connected to the other end of the transducer. A slow electrical signal applied to the piezo slowly changes the length, causing the two jaws to slide in opposite directions. This slow sliding motion makes the screw turn (static friction). At the end of the transducer motion, a fast electrical signal quickly returns the jaws to their starting positions. Because of the screw’s inertia and low dynamic friction, it remains motionless, holding its position. Simply reversing the order of the fast and slow signals reverses the direction of rotation.

0.7 µrad Resolution

Our Picomotor actuators allow for an angular resolution of 0.7 µrad, allowing for very small, controlled movements of your optics. The Picomotor actuator offers the additional advantage of using the integrated knobs for quick, manual adjustment of all axes.

Set-and-Forget Long-Term Stability

The Picomotor actuator moves when voltage is applied to the piezo, changing its length and in turn moving the jaws which turn the screw. When no power is applied, the actuator does not move. You can feel confident that your mount will stay put, even when you power down your system.

Gimbal Mirror Mounts

A gimbal mount has axes of rotation which intersect at the center front surface of the optic. When the mount is adjusted, only the beam's angle changes, not its length. In contrast, a non-gimbal mount will shorten or lengthen a beam path as angle is adjusted.

Corner Mirror Mounts

Corner Mirror Mounts hold the mirror in a unique location near the edge of the frame. In this location, not only is there a clearer beam path but also gimbal movement is possible.

Platform Optical Mounts

Platform mounts have a flat, square, adjustable surface for mounting custom optics, prisms, and beamsplitter cubes. One benefit platform mounts have over aperture mounts is their ability to hold mirrors which are as large as or larger than the actual mount itself.

Smooth and Reliable Motorized Adjustment

Sapphire seats and optimized spring location and force provides for smooth, reliable motorized adjustment while maintaining a high level of thermal and mechanical stability.

Resources