T-PS852 - F2 Equilateral Dispersive Prism, 25 mm

Part No.: T-PS852

$ 215.00

T-PS852 - F2 Equilateral Dispersive Prism, 25 mm

Product Drawing

F2 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. Compared to N-SF11, it offers superior chemical resistance and slightly higher transmission.

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 F2 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^a

Material	Wavelength Range	Index of Refraction	Abbe Number
F2	385 nm - 2 µm	1.617 @ 633 nm	36.37

Item #	A=B=C=H (mm)	Material	Minimum Angle of Deviation	V	Surface Flatness @ 633 nm
T-PS852	25 ± 0.15	F2	47.9° @ 633 nm	36.37	λ/10

Material	Minimum Angle of Deviation	V_d^b	Surface Flatness @ 633 nm	Clear Aperture	Surface Quality	Angular Tolerance	Number of Polished Faces	Index of Refraction Plot
F2	47.9° @ 633 nm	36.37	λ/10	70%	40-20 Scratch-Dig	±5 arcmin	2	Click