Ren′e Platz, Bernd Eppich, Juliane Rieprich, Wolfgang Pittroff, G¨otz Erbert, Paul Crump. High duty cycle, highly efficient fiber coupled 940-nm pump module for high-energy solid-state lasers[J]. High Power Laser Science and Engineering, 2016, 4(1): 010000e3
- High Power Laser Science and Engineering
- Vol. 4, Issue 1, 010000e3 (2016)
Fig. 1. Single stack element.
Fig. 2. 3.6 kW stack subassembly with fast-axis collimation.
Fig. 3. Optical simulation of the 6 kW fiber coupling system.
Fig. 4. Measured beam profile near the focus plane, which is identical with the coupling plane. The plotted circle corresponds to the fiber core diameter.
Fig. 5. Measured caustic of the focused laser beam.
Fig. 6. 6 kW pump module with 1.9 mm high-power fiber. Dimensions without fiber: 68 cm $\times$ 32 cm $\times$ 20 cm.
Fig. 7. Power characteristics of the pump module (out of fiber).
Fig. 8. Peak output power (a) and spectral distribution (b) of the pump module depending on duty cycle.
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Table 1. Typical stack data (measured).
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