Abstract
A cycle of works on manufacturing and studying laser and magnetooptical ceramics with a focus on their thermo-optical characteristics performed by the research team is analyzed. Original results that have not been published before such as measurements of the Verdet constant in the Zr:TAG, Re:MgAl2O4, and ZnAl2O4 ceramics are also presented.
Highlights
A permanent enhancement of the time-average power of continuous and pulseperiodic lasers leads to a significant increase of the parasitic impact of thermal effects on their operation
If a paramagnetic is used as magneto-active elements (MAE)’ material, the isolation ratio of the device may reduce under the parasitic influence of the effect of paramagnetic MAE magnetization that becomes significant when the magnetic field inhomogeneity inside the element due to magnetization is comparable with the inhomogeneity of the magnetic system field
The theoretical dependences of the Verdet constant on wavelength obtained by approximating the experimental data of the above-mentioned works using the expression (9) in comparison with the widely used terbium-gallium garnet (TGG) material are presented in Figure 5 [63]
Summary
A permanent enhancement of the time-average power of continuous and pulseperiodic lasers leads to a significant increase of the parasitic impact of thermal effects on their operation. All temperature-dependent optical characteristics (refractive index, thermal conductivity coefficient, Verdet constant, etc.) become inhomogeneously distributed and the internal stresses and, the deformations will lead to the appearance of thermally induced birefringence caused by the photoelastic effect. The situation is different for ceramic materials In this case, only a more complex combination Qe f f = QX can be found from the dependence of thermally induced depolarization on laser power, whereas the thermo-optical characteristics cannot be differentiated. Only a more complex combination Qe f f = QX can be found from the dependence of thermally induced depolarization on laser power, whereas the thermo-optical characteristics cannot be differentiated This information may be sufficient for comparison of the new material with the widely used ones to date. Two main chapters of the represented work are devoted to them
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