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Parasitic thermal effects (thermal depolarization and thermal lens) of three Konoshima Chemical Co. laser‐ceramics samples Yb3+:Lu2O3(CYb≈1.8%), Yb3+:Y2O3(CYb≈1.8%), and Yb3+:Sc2O3(CYb≈2.5%) were measured in experiment at different pump power. The obtained results were used to calculate a number of thermo‐optical constants, which showed that sesquioxide ceramics are significantly superior to the widely...
A study on Laguerre‐Gaussian (LG) modes selection in cw and pulsed Nd:YAG or Yb:YAG ceramic lasers pumped by diodes or an external laser source was carried out. Methods of scalar and vector LG modes selection from low to high orders, involving shaping of the pump profile, usage of intra‐cavity lenses, uniaxial crystals and polarization selective mirrors, are considered. CCD camera images of beam profiles...
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