Influence of Ammonium Hydrogen Carbonate to Metal Ions Molar Ratio on Co-precipitated Nanopowders for TGG Transparent Ceramics

Influence of presintering temperature on magnesium aluminate spinel transparent ceramics fabricated by solid‐state reactive sintering

“…In Figure 8B, it can be seen that the MgO⋅1.1Al 2 O 3 ceramics presintered at 1550 • C with HIP posttreatment exhibit the best in-line transmittance of 86.5% at 1100 nm, which is near to the theoretical in-line transmittance. While the transmittance is relatively lower at short wavelength, which is due to the Mie scattering caused by the sub-micron pores, 42,43 they are difficult to be eliminated by HIP posttreatment. The ceramic presintered at 1600 • C with HIP posttreatment shows lower in-line transmittance of 84.2% at 1100 nm.…”

Fabrication and characterizations of Tb3Al5O12‐based magneto‐optical ceramics

“…In high‐power laser system, optical isolator based on the nonreciprocal Faraday effect is a no‐negligible passive component as it can effectively isolate the deleterious backlight, which is conducive to reducing the damage to the laser source and ensuring the stability of the systems 1–6 . In pace with the development of magneto‐optical isolators toward high power, miniaturization, and low cost, 7–10 more stringent requirements are being placed on the properties of magneto‐optical materials, mainly including high Verdet constant, large size, good optical quality, high thermal conductivity, outstanding laser damage threshold, and so on 11–17 . At present, terbium gallium garnet (Tb 3 Ga 5 O 12 , TGG) single crystals are the mainstream magneto‐optical material used in the visible and near‐infrared bands, 18–20 whereas terbium aluminum garnet (Tb 3 Al 5 O 12 , TAG) has a same garnet structure with TGG 21–23 .…”

Fabrication, microstructure and optical characterizations of holmium oxide (Ho2O3) transparent ceramics

“…The working principle of optical isolator is based on the Faraday effect of magneto-optical materials. As a core part of optical isolator, more and more attention has been paid to magneto-optical materials, especially magneto-optical ceramics, such as TGG (Tb 3 Ga 5 O 12 ) [6][7][8][9], TAG (Tb 3 Al 5 O 12 ) [10][11][12][13][14], YIG (Y 3 Fe 5 O 12 ) [15,16], THO (Tb 2 Hf 2 O 7 ) [17,18], TIG (Tb 3 Fe 5 O 12 ) [19], and rare-earth sesquioxides [20][21][22][23][24][25] ceramics.…”