Tip/Tilt optic rotation mounts provide precise control of polarizers on all three axes of rotation. 1 in. and 0.5 in. wave plates, polarizers, and beamsplitter cubes rotate over 360° smoothly with exacting tip/tilt control while this mount also offers an easier to read rotation scale and independent lock of just the rotation adjustment.
- Precision pitch, yaw, and roll positioning for 1 and 0.5 in. polarization optics
- Redesigned for easy reading of 360° rotation scale
- Hand-turned knobs for finer rotation control
- 100-TPI adjusters for high precision pitch and yaw adjustment
- Independent, non-influencing locks to maintain stable optical alignment See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | GM-1RAOptic Rotation Mount, Gimbal Tip-Tilt, 25.4 mm, 100 TPI | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M1-1PROptic Rotation Mount, Kinematic Tip-Tilt, 25.4 mm, 100 TPI | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Specifications
Features
Gimbaled Tip, Tilt, and Rotation
The GM-1RA Gimbal Rotation Mount provides tip/tilt positioning for 1 in. (25.4 mm) wave plates, polarizers, and beamsplitter cubes. This mount is unique due to its gimbaled tip/tilt mechanism which allows angular adjustment of the optic without unwanted translation. The rotation stage can also be removed from the tip/tilt mechanism by removing four screws, allowing the rotation stage to be reversed or used independently.
Independent Non-influencing Locks
The GM-1RA mount features independent locks for all axes, maintaining stable optical alignment. Engaging or disengaging each lock has negligible influence on the other axes.
Removable Slotted Base Plate
The GM-1RA mount features a slotted base plate as well as two threaded holes 1/4-20 and M6 at the bottom for maximized flexibility of mounting. The slotted base can be removed in space-limited applications.
Kinematic Mount Meets Rotation Mount
The M1-1PR Kinematic Polarizer Rotation Mount combines the tip/tilt adjustments of a kinematic mirror mount with rotation adjustment of a polarizer rotation mount. The mount features precise 100 TPI adjustment screws for increased pitch and yaw sensitivity. Rotation on full ball bearing races can be coarsely aligned using the knurled edge of the rotating platform while fine adjustment with 4 arc min sensitivity is achieved by the knob. Angular position can be locked in place securely with the little screw in the center of the knob.
Versatile Optic Mounting
Both Tip-Tilt Optic Rotation Mounts hold 1.0 in. optic such as waveplates and polarizers securely in place with included retaining rings. Additionally, a variety of other optic in compatible adapter or holder can directly thread into the central 1.063''-20 aperture, for example, 0.5 in. optic in
Beam Attenuation Using Polarization
A crossed polarizer optical setup can be used to easily control beam attenuation by rotating a second polarizer in the optical path. In this setup, a HeNe laser beam passes through a polarizing beamsplitter cube, separating the light into two orthogonal linear polarizations. A polarizer on a rotation mount is placed after the beamsplitter. Rotation of the second polarizer illustrates how the intensity of transmitted light varies with polarization angle. This demonstration highlights how light can be manipulated and attenuated for different optical systems by using polarization. Proper safety precautions should be followed, and beam blocks or barriers should be used to safely terminate stray beams. See the parts list of the shown setup example.
| Model Number | Decsription | Quantity |
|---|---|---|
| 400-700 nm Linear Polarizer | 1 | |
| Tip-Tilt Optic Rotation Mount | 1 | |
| Prism Mount | 1 | |
| 420-680 nm Polarizing Cube Beamsplitter | 1 | |
| Cylindrical Laser Mount | 1 | |
| 633 nm HeNe Laser | 1 | |
| Post Clamp | 1 | |
| Damped Optical Post | 1 | |
| Screw Kit | 1 | |
| 4 inch Optical Post | 2 | |
| 3 inch Optical Post Holder | 2 |
Accessories
Compatible Adaptors
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | CH-0.5Cube Beamsplitter Holder, 0.5 in. Cubes, 1.063-20 Threaded Mounts | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PRA-05Polarizer Adaptor, 12.7 mm Optics to 1.063-20 Threaded Mounts | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | RSA-1TISolid Insert, RSP-1T Rotation Stage | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | LT10-NP1Thread Adaptor, 1.0 in. Lens Tubes, 1.035-40 to 1.063-20 Mount Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Compatible Retaining Rings
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | A-1.25-1RRRetaining Ring, 19.2 mm ID, 1.063-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | A-1.25-1RR-LRetaining Ring, 22.9 mm ID, 1.063-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |



















