THORLABS K3S4 Polaris 3" Dia Optic Mount, 2 Adjusters High Vacuum Compatible

THORLABS K3S4 Polaris 3" Diameter Optic Mount, 2 Adjusters High Vacuum Compatible

Used in great shape. See photos. Adjusters work great through their whole travel range. See photos for specifications and to see more what these mounts are like.

Features:

    Machined from Heat-Treated Stainless Steel with Low Coefficient of Thermal Expansion (CTE)

    Hardened Stainless Steel Ball Contacts with Sapphire Seats for Durability and Smooth Movement

    Matched Actuators and Back Plate Provide Stability and Smooth Kinematic Adjustment

    Extensive Testing Guarantees Less than 1 μrad Deviation after 10 °C Temperature Cycling (See Test Data Tab for Details)

    Passivated Stainless Steel Surface Ideal for Vacuum and High-Power Laser Cavity Applications

    Custom Mount Configurations are Available by Contacting Tech Support

    Patented Optic Bore Design with Monolithic Flexure Arm

Polaris® Low-Drift Kinematic Mirror Mounts are the ultimate solution for applications requiring stringent long-term alignment stability.

Optic Retention

These Polaris mirror mounts feature a patented optic bore design with a monolithic flexure arm to hold the optic. This design provides high holding force and pointing stability while allowing quick and easy installation of the optic. For details on the stability of these mounts, please see the Test Data tab.

Polaris optic bores are precision machined to achieve a fit that will provide optimum beam pointing stability over changing environmental conditions such as temperature changes, transportation shock, and vibration. These mounts have had their performance tested and verified with Ø3" optics that have a diameter tolerance of up to +0/-0.1 mm, so this tolerance range is recommended for optimal performance. Note that the mounts are not intended for use with optics that have an outer diameter tolerance greater than zero or smaller metric mirror sizes (Ø75 mm). To order a mount designed for metric optics, please contact Tech Support.

Design

Machined from heat-treated stainless steel, Polaris mounts utilize precision-matched adjusters with ball contacts and sapphire seats to provide smooth kinematic adjustment. As shown on the Test Data tab, these mounts have undergone extensive testing to ensure high-quality performance. The Polaris design addresses all of the common causes of beam misalignment; please refer to the Design Features tab for detailed information.

Post Mounting

These Polaris mirror mounts are equipped with six #8 (M4) counterbores for post mounting. In order to maintain stability, they should be mounted on a Ø1" post for Polaris mirror mounts that has three mounting taps. See the Usage Tips tab for more recommendations about mounting configurations.

Cleanroom and Vacuum Compatibility

All Polaris mounts, removable knobs, and lock nuts on this page are designed to be compatible with cleanroom and vacuum applications.

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