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Polarization Rotator
- CASTECH offers an extensive production line of birefringent crystals for polarization applications.
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Introduction：
CASTECH offers an extensive production line of birefringent crystals for polarization applications. Our crystal polarizer family includes Glan-Taylor Polarizers, Glan-Laser Polarizers, Glan-Thompson Polarizers, Wollaston Polarizers, Rochon Polarizers and Quartz Polarization Rotators. Substrate options have α-BBO (UV), calcite (visible to Near-IR), yttrium orthovanadate (YVO4, Near-IR to Mid-IR), MgF2 (UV to Mid-IR), and crystal quartz (UV to Near-IR). Both the mounted and unmounted crystals are available. Contact us freely to select the ideal combination of construction type, substrate, coating design, angle of operation and laser damage resistance level to suit your applications.
Specifications：
| Material | Crystal Quartz |
| Dimension Tolerance | +0.0/-0.1mm |
| Wavefront Distortion | ＜λ/8 @ 632.8nm |
| Wavelength Range | 440-1600nm |
| Rotation Accuracy | ＜5′ |
| Surface Quality | 20/10 |
| Clear Aperture | ＞central 90% of diameter |
| AR Coating | R＜0.25% @ per surface at central wavelength |
| Rotation Orientation | Clockwise（right-handed,standard） |
Feature：
• Excellent optical performance;
• All kinds of coatings are available;
• Custom designs for other sizes and coatings are also available upon request;
• Left-handed polarization rotator is also available.
Order Information：
Polarizing Rotator：
| Part Number | Diameter（mm） | Rotation（clockwise） |
| CPR-127-R045-λ | 12.7 | 45° |
| CPR-150-R045-λ | 15.0 | 45° |
| CPR-200-R045-λ | 20.0 | 45° |
| CPR-254-R045-λ | 25.4 | 45° |
| CPR-127-R090-λ | 12.7 | 90° |
| CPR-150-R090-λ | 15.0 | 90° |
| CPR-200-R090-λ | 20.0 | 90° |
| CPR-254-R090-λ | 25.4 | 90° |
Standard Wavelength（λ）：
| 532nm | 632.8nm | 1064nm |
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