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- Shear Plate Collimation Tester
Shear Plate Collimation Tester
Shear Plate Collimation Tester
This document provides details about a 2-inch diameter Shear Plate Collimation Tester used for quick testing of beam collimation through shearing interferometry. The tester is designed to be aligned at a 45-degree angle of incidence to the incident beam, forming an interference pattern that helps in accurately determining the beam's collimation.
Key Features
- Quick and easy testing of beam collimation.
- Usable in the visible wavelength range.
- Made from Fused Silica material.
- 2-inch diameter size.
Specifications
- Material: Fused Silica
- Diameter: 50.8 mm
- Center Thickness (nominal): 9.40 mm
- Chamfers (facewidth): 0.38–1.14 mm
- Chamfers Angle/Tolerance: 45° ±15°
- Clear Aperture: 80%
- Surface Quality (scratch-dig): 60-40
- Surface Flatness: ≤λ/10 at 632.8 nm over the clear aperture
Ordering Information
The model number for ordering is 20QS20, with a diameter of 50.8 mm, a clear aperture of 40.6 mm, and a nominal center thickness of 9.40 mm.
Additional Information
For further details, refer to application note #25 on shearing interferometry available on the website.
Catalog excerpts
540 O p t i c s Phone: 1-800-222-6440 • Fax: 1-949-253-1680 WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Shear Plate Collimation Tester This 2" diameter collimation tester is a wedged window that allows for quick testing of collimation by utilizing shearing interferometry. When the collimation tester is aligned at a 45 degree angle of incidence with respect to the incident beam, an interference pattern is formed. By adjusting the input beam condition and observing the fringe pattern, the collimation of the beam can be accurately obtained. See the website for application note #25 and more information on shearing interferometry. • For quick, easy testing of beam collimation • Useable in the visible wavelength range • Fused Silica Material • 2" diameter size Specifications Material Fused Silica Diameter (mm) 50.8 Center Thickness (nominal) 9.40 mm Chamfers (facewidth) 0.38–1.14 mm Chamfers Angle/Tolerance 45° ±15° Clear Aperture 80% Surface Quality (scratch-dig) 60-40 Surface Flatness ë/10 at 632.8 nm over the clear aperture nm Ordering Information Model Diameter (mm) 20QS20 50.8 Collimation Tester Screen Incident Beam Under Test C Wedge S1 S2 ø B ø A Dimension (mm) Model øA øB C (nominal center thickness) 20QS20 50.8 40.6 9.40 ULTIMA® Precision Kinematic Optical Mounts see page 652 Pedestal Post System see page 712 NEW
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