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              4寸晶棒

              2014-08-31




              Item


              4"Specification

              Unit

              Remark


              Substrate grade


              Sapphire Ingot

              ~

               


              Crystal growth method


              Kyropulos Al2O3 or another on agreement

              ~

               


              Optical Characteristic


              High purity optical grade monocrystalline

              ~

               


              Orientation


              C-plane(0001) ±0.1

              ~

               


              Diameter of ingot


              100.2,±0.1?

              mm

               


              Length of Prime flat


              30.0±0.5

              mm

               


              Orientation of Prime flat


              A-plane(1 1-2 0)± 0.2?

              ~

               


              Rod Length


              50

              mm

               


              Surface Finish


              Circumference surface Ra < 1 μm; Both ends surface Ra < 1 μm

              μm

               


              Chip size on both sides

              < 0.5 mm x 0.5 mm

              ~

               

              Crystal Bubble/Defects Percentage


              < 15%

              ~


              Defects zones include bubbles, scattering centers, grain boundary, twinning, inclusion, stress distortion, and cracks inside. Defect zones need to be marked


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