Substrate Material: |
Crystal sapphire(C plane); Optical grade |
Design: |
Cube design with all 6 surfaces optically polished
Optical surfaces: side surfaces(S1, S2, S3, S4) and bottom surfaces(S5 and S6) |
Outer Dimensions: |
7.5 x 7.5 x H7.5, +/-0.1mm |
Surface Quality: |
All surfaces(S1/S2/S3/S4/S5/S6): 40-20 S/D |
Parallelism: |
S1/S2, S3/S4 and S5/S6: all within 3 arc minutes |
Surface Flatness: |
<Lambda/4@ 633nm over surface |
Bottom Surfaces(S5 & S6) |
C-plane surfaces, 40-20 S/D, <lambda/4 @ 633nm |
Angle Tolerance: |
+/-5 arc minutes |
Bevels:
(ground) |
S1 ~ S4: all these 4 side surfaces with un bevelled edge of <0.1mm x 45deg
S5: Top surface as shown below, C-plane surface with 2 x diagonal corner chamfer (0.2mm x 45deg)
S6: C-plane surface with un bevelled edge of <0.1mm x 45deg
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