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Glan-Thompson Polarizer
- 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.
Features:
- Material: Calcite, α-BBO, YVO4, MgF2 or Crystal Quartz
- Custom dimension and shapes
- Extinction ratio: 100,000:1
- Standard and custom coating options available
- High laser damage threshold
Specifications：
| Material | Calcite；α-BBO |
| Wavelength Range |
Calcite: 350-2300nm α-BBO: 220-900nm |
| Extinction Ratio |
Calcite:<5x10-5 α-BBO:<5x10-6 |
| Surface Quality | 60/40 |
| Dimension Tolerance | ±0.1mm |
| Damage Threshold | ＞200MW/cm2 |
| Beam Deviation | ＜3′ |
| Wavefront Distortion | ＜λ/4 @ 632.8nm |
| Coating | Single Layer MgF2 |
| Housing | Black Anodized Aluminum |
• Large Acceptance Angle: Special design for the ratio of l/A (length/aperture) guarantees the wide acceptance angle.
• High Polarization Purity.
• Suitable for low power applications.
Order Information：
| PGM | --- | 080 | --- | ABBO |
| ↓ | ↓ | ↓ | ||
| Product Code | Clear Aperture "a"=8mm | Material |
Glan-Thompson Polarizer：
| Part Number | 1/A |
Wavelength Range （nm） |
a （mm） |
D （mm） |
L±0.1 (mm) |
Material |
| PGM-080-CAL-2.5 | 2.5 | 350-2300 | 8 | 25.4 | 28 | Calcite |
| PGM-100-CAL-2.5 | 10 | 25.4 | 33 | Calcite | ||
| PGM-150-CAL-2.5 | 15 | 30 | 45.5 | Calcite | ||
| PGM-080-CAL-3.0 | 3 | 350-2300 | 8 | 25.4 | 32 | Calcite |
| PGM-100-CAL-3.0 | 10 | 25.4 | 38 | Calcite | ||
| PGM-150-CAL-3.0 | 15 | 30 | 53 | Calcite | ||
| PGM-080-ABBO-1.6 | 1.6 | 220-900 | 8 | 25.4 | 21 | α-BBO |
| PGM-100-ABBO-1.6 | 10 | 25.4 | 24.5 | α-BBO | ||
| PGM-150-ABBO-1.6 | 15 | 30 | 32.5 | α-BBO |
Note：Custom designs for other sizes and coatings are also available upon request.
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