## Optical constants of Te (Tellurium)

Caldwell and Fan 1959: n(e) 4.0–14 µm

Wavelength:
µm

(4–14)

### Complex refractive index (*n+ik)*

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=28.5222+\frac{9.3068λ^2}{λ^2-2.5766}+\frac{9.2350λ^2}{λ^2-13521}$$### Comments

Extraordinary ray (e).

### References

1) R. S. Caldwell and H. Y. Fan, Optical properties of tellurium and selenium, *Phys. Rev.*, **114**, 664–675 (1959)

2) G. C. Bhar, Refractive index interpolation in phase-matching, *Appl. Opt.* **15**, 305–307 (1976)

*Ref. 2 provides a dispersion formula based on data from Ref. 1