Cauchy Dispersion Calculator
Use the Cauchy dispersion equation to model how refractive index varies with wavelength. Includes dispersion and absorption curves, Abbe number, and group refractive index calculations.
Inputs
Dominant refractive index term
First dispersion coefficient
Second dispersion coefficient
Results
Refractive Index n(λ)
1.513223
n at 530 nm
1.514240
n at 550 nm
1.513223
n at 630 nm
1.510078
Abbe Number Vd
66.95
Group Index ng
1.539670
Dispersion Curve (n vs λ)
Transmittance vs Wavelength
Cauchy Dispersion Results
| Parameter | Value |
|---|---|
| Refractive Index n(λ) | 1.513223 |
| Wavelength | 550 nm |
| n at 530 nm | 1.514240 |
| n at 550 nm | 1.513223 |
| n at 630 nm | 1.510078 |
| Abbe Number Vd | 66.95 |
| Group Refractive Index ng | 1.539670 |
| dn/dλ | -0.048084 /μm |
| Absorption Coefficient | 0.1 cm⁻¹ |
| Transmittance (1 cm) | 90.48% |
| Cauchy Formula | n(λ) = 1.5 + 0.004/λ² + 0/λ⁴ |
Frequently Asked Questions
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