Meng’en Wei, Tingqing Cheng, Renqin Dou, Qingli Zhang, Haihe Jiang. Superior performance of a 2 kHz pulse Nd:YAG laser based on a gradient-doped crystal[J]. Photonics Research, 2021, 9(7): 1191
- Photonics Research
- Vol. 9, Issue 7, 1191 (2021)
Fig. 1. Nd 3 +
Fig. 2. Different temperature distribution of the two crystal rods under pump power of 45 W. Crystals rod of (a) 0.39–0.80 at.%, (b) 0.60 at.%.
Fig. 3. Different temperature distribution of the rod axis.
Fig. 4. Dependence of the focal length on the pump power. Different Nd:YAG concentrations of (a) 0.40 at.%, (b) 0.60 at.%, (c) 0.80 at.%, (d) 0.39–0.80 at.%, and (e) 0.80–0.39 at.%. Theoretical calculation of (f) 0.60 at.% and (g) 0.39–0.80 at.%.
Fig. 5. Experimental arrangement for comparison of the continuously spatially varying and conventional crystals. Schematic configurations for the different Nd:YAG concentrations of (a) 0.40 at.%, (b) 0.60 at.%, (c) 0.80 at.%, (d) 0.39–0.80 at.%, and (e) 0.80–0.39 at.%.
Fig. 6. Output average power with respect to the absorbed pump power for each laser crystal.
Fig. 7. Beam profiles and beam qualities of (a) 0.39–0.80 at.% and (b) 0.60 at.%.
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