What is the refractive index of PMMA?

1.49
Poly(methyl methacrylate) (PMMA) has been recognized as an excellent optical polymer for use in optical fibers, optical disks, and lenses. However, the refractive index of PMMA is limited to 1.49.

How do you calculate nonlinear refractive index?

Now the nonlinear refractive index n2 can be calculated from the nonlinear susceptibility by n2 = (12π/n0) χ 1111 ( 3 ) (–ω; ω, ω, –ω), were n0 is the linear refractive index of the material. It is clear that the measurement of n2 rigorously requires ωa = ωb = ωc.

What is the highest refractive index?

The highest refractive index is of Diamond with its value 2.42.

Refractive index of glass is 1.5.
Refractive index of water is 1.33.
Refractive index of ruby is 1.77.

What is the refractive index of epoxy?

As optical adhesives, the average refractive indices of conventional epoxy resins are in the range of 1.50–1.56.

What makes a high refractive index?

A high refractive index material is generally defined as a treated glass, polymer, or chemical coating possessing a refractive index of >1.50. High refractive index materials are often combined with materials of contrasting refractivity to create transparent components with anti-reflective properties.

What has the least refractive index?

Air
Air has the lowest refractive index, but it isn’t mechanically stable. And the lowest refractive index found in solid, naturally occurring materials is 1.39. But now researchers have developed a film made of aluminum oxide that has a refractive index as low as 1.025 but that is mechanically stiff.

What material has the largest refractive index?

Diamond, has the highest refractive index among the following. 2) Relative refractive index, where the ratio is taken between the speed of light in two mediums other than vacuum.

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