Overview of the parameters of the compared laser systems
| Parameter | Reference system | Additive system |
|---|---|---|
| Max. output power / W | 3.6 | 3.2 |
| Slope efficiency / % | 52.9 ± 0.3 | 51.1 ± 0.8 |
| Standard deviation of the output power over 8 h / % | 0.2 | 0.8 |
| Optic-to-optical efficiency / % | 50.4 ± 0.1 | 45.7 ± 0.4 |
| M2 | 1.42 | 1.32 |
| Pointing RMS / µrad | 1.9 | 19.9 |
| Reference system | Additive system | |
|---|---|---|
| 3.6 | 3.2 | |
| 52.9 ± 0.3 | 51.1 ± 0.8 | |
| 0.2 | 0.8 | |
| 50.4 ± 0.1 | 45.7 ± 0.4 | |
| 1.42 | 1.32 | |
| 1.9 | 19.9 |
Optical-to-optical efficiency and power stability are calculated and measured, respectively, at maximum output power. Same applies for the M2. The accuracy of the power values is 3.0 % according to the specification of the power head. For the pointing, the beam position is detected over a period of 2 h
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