System Specifications
Summary of performance targets and operating envelope for the Automated Laser Beam Characterizer instrument. See full details in Documents.
Input Beam Specifications
| Parameter | Value |
|---|---|
| Wavelength | At least 2 µm |
| Max Power | 1 - 10 – 10 W |
| Minimum Power | 1 - 50 – 50 mW |
| Beam Diameter | 4 - 35 – 35 mm |
Measurement Specifications
| Measurement | Accuracy |
|---|---|
| Normalized Stokes Parameters | ±0.05 for all parameters |
| Wavelength | ±10 nm |
| M² factor | ±0.1 up to M²=3 |
| Beam Divergence | ±10 µrad |
| Total Power | less than 5 % |
Component Specifications
| Component | Parameter | Specification | Units |
|---|---|---|---|
| QWP | Phase Delay | ~π/2 @ 2 µm | waves |
| QWP | Clear Aperture | > 42 | mm |
| Linear Polarizer | Extinction Ratio | < -20 | dB |
| Linear Polarizer | Clear Aperture | > 42 | mm |
| Power Meter | Aperture Size | 4 – 10 | mm |
| Power Meter | Power Intake* | 1 – 1000 | mW |
| ND Filter | OD Level | 2 | N/A |
| Lens | Spectral Range | At least 2 | µm |
| Lens | EFFL | 600 – 1000 | mm |
| Lens | Clear Aperture | > 42 | mm |
| Beam Splitter | Split Ratio | 50/50 | N/A |
| Beam Splitter | Polarization effects | Low | N/A |
* Power level of Power Meter can be less than system input power when ND filter is applied.
Notes
- Measurement algorithms follow ISO 11146 guidance where applicable.
- Divergence and waist derived from z-scan; M² via far-field slope or quadratic fit.
- Polarization via rotating QWP + fixed LP; Stokes vector computed and normalized.