Table 1.
Laser beam diameters (2 ω0) and M2 values measured at the focal points. Measurements were performed using a scanning slit beam profiler (DataRay Beam-Map 2 sensor). The 2 ω0 values were measured at 1/e2 of the peak intensity. Output average power (P), pulse energy (EP), and peak fluence (F) calculated for each wavelength are also given here.
| Wavelength (nm) | P (W) | Ep (μJ) | 2 ω0 (μm) | M2 (value) | F (J/cm2) 1 |
|---|---|---|---|---|---|
| 1030 | 50 | 125 | 35 ± 1 | 1.3 ± 0.1 | 26.0 ± 1.5 |
| 515 | 30 | 75 | 21 ± 1 | 1.4 ± 0.1 | 36.3 ± 3.5 |
| 343 | 18 | 45 | 20 ± 1 | 2.1 ± 0.1 | 28.9 ± 2.9 |
1 Peak fluence was calculated as follows: F = 2 EP/(πω02), where EP is pulse energy and ω0 is the beam radius.