mgo doped lithium niobate anti photorefraction crystal

{"cid":"91189418","title":"SAW Grade Doping Lithium Niobate Wafer MgO Er Fe Doped LT Optical Grade","imgUrl":"https:\/\/img.chinax.com\/nimg\/0a\/0a\/1008f8bea7d249ebcbf2957e96a4-200x200-1.jpg","attrs":{"Price":"USD 20~200\/pc","Brand Name":"Crystro","Model Number":"CR2202241-01","Minimum Order Quantity":"1pc","Delivery Time":"4-5 weeks","Certification":"SGS\/COC","Place of Origin":"China","Payment Terms":"T\/T, Western Union, MoneyGram, Paypal","Supply Ability":"20000pcs per month","Packaging Details":"Transparent clean box","Material":"SAW Grade Doping Lithium Niobate Wafer MgO Er Fe Doped LT Optical Grade","Dope":"MgO, Er, Fe","Ra Roughness":"<1nm","Mohs Hardness":"5","Origin":"China","Delivery":"1-4 weeks","Shipment":"Express,DHL.Fedex","Packing":"individual container for each substrate, packed in bag filled with inert gas."}}

{"cid":"91202165","title":"Z Cut LiNbO3 Wafer Optical Grade lithium niobate substrate 8 Inch","imgUrl":"https:\/\/img.chinax.com\/nimg\/61\/46\/58fe8c1f5ecf6125b6052fe9021b-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"BonTek","Model Number":"Lithium Niobate (LiNbO3)","Minimum Order Quantity":"2 pcs","Delivery Time":"4-6 weeks","Certification":"ISO:9001, ISO:14001","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"500 pcs\/Month","Packaging Details":"Cassette\/ Jar package, vaccum sealed","Material":"LiNbO3 Wafer","Grade":"SAW or Optical grade","Diameter":"8 inch, \u03c6200mm","Orientation":"Z-cut, X-cut","Thickness":"500um, 675um, 1000um","Surface":"DSP, SSP","Roughness":"Ra<0.5nm","Application":"Optical use"}}