Equilateral Dispersive Prisms (PS Series)
Brand: ThorLabs | Category: Scientific & Laboratory Equipment
High index prisms with a low Abbe number, used to disperse white light into a spectrum with less stray light than a grating and no higher diffraction orders. They are normally used at the minimum angle of deviation.
Technical Specifications
| Parameter | Value |
|---|---|
| Specification | Sizes from 10 mm to 50 mm |
| Materials | F2, N-F2, N-SF11, calcium fluoride or zinc selenide |
| Minimum angle of deviation | 47.9 degrees for F2 and N-F2 at 633 nm |
| Minimum angle of deviation | 65.6 degrees for N-SF11 at 633 nm |
| Abbe number Vd | 36.37 (F2), 25.76 (N-SF11), 95.00 (CaF2) |
| Surface flatness | lambda/10 for glass prisms, lambda/2 for CaF2 and ZnSe |
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