T-PS851 - N-SF11 Equilateral Dispersive Prism, 10 mm
T-PS851 - N-SF11 Equilateral Dispersive Prism, 10 mm
N-SF11 is a flint glass that offers excellent performance in the visible and NIR spectral range. It offers a high refractive index and low Abbe number, making it excellent for use in an equilateral dispersive prism.
Polarization Effects
For P-Polarized light (blue line) incident on a dispersing prism at the angle of least deviation, the graph to the right shows that only a small percentage of the P-polarized light is reflected at the surface. Thus, for this polarization, the transmission through a prism fabricated from N-SF11, a RoHS-compliant version of SF11, will be excellent even though there is no AR coating on the surface.
| Material | Wavelength Range | Index of Refraction | Abbe Number |
|---|---|---|---|
| F2 | 385 nm - 2 µm | 1.617 @ 633 nm | 36.37 |
| N-F2 | 420 nm - 2 µm | 1.617 @ 633 nm | 36.43 |
| N-SF11 | 420 nm - 2.3 µm | 1.779 @ 633 nm | 25.76 |
| CaF2 | 180 nm - 8 µm | 1.433 @ 633 nm | 95.00 |
| ZnSe | 600 nm - 16 µm | 2.403 @ 10.6 µm | N/A |
| Item # | A=B=C=H (mm) |
Material | Minimum Angle of Deviation |
V | Surface Flatness @ 633 nm |
|---|---|---|---|---|---|
| T-PS850 | 10 ± 0.15 | F2 | 47.9° @ 633 nm | 36.37 | λ/10 |
| T-PS852 | 25 ± 0.15 | ||||
| T-PS856 | 15 ± 0.15 | N-F2 | 47.9° @ 633 nm | 36.43 | λ/10 |
| T-PS858 | 20 ± 0.15 | ||||
| T-PS854 | 50 ± 0.15 | ||||
| T-PS851 | 10 ± 0.15 | N-SF11 | 65.6° @ 633 nm | 25.76 | λ/10 |