Lithium Niobate Thin Films on Insulator is kind of POI (Piezoelectric on Insulator) wafer. It's stacked sequence structure is made of support substrates that can be silicon, quartz, fused silica, sapphire or LN wafer, the interlayer is thermal oxide SiO2 that works as insulator and lithium niobate film is the functional layer above the insulation
CQT production line Measurement and inspection methods
Here is Quartz Materials China Manufacturer talking about What Is The Polishing Technique Of Quartz Glass Lenses. After the quartz glass lens is finely ground by the grinding liquid, it has a crack layer of about 2–3 m thick on the outside, and the method of eliminating the crack layer is polishing.
Here is High Quality Quartz Materials China Factory talking about Production Process Of Quartz Rods. 1. A damaged layer on the surface of the Fused Silica Wafers due to processing stress after work.2. Use the sandblasting method to feel the lower half of the defects and defects on the wafer.
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