## Optical constants of PbTe (Lead telluride)

Weiting and Yixun 1990: n 5.19–12.5 µm; 80 K

Wavelength:
µm

(5.189–12.51)

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

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2=1+\frac{34.576λ^{2}}{λ^2-4.0854}-0.0087206λ^{2}$$### Comments

80 K (-193 °C)

### References

F. Weiting and Y. Yixun. Temperature effects on the refractive index of lead telluride and zinc selenide, *Infrared Phys.* **30**, 371-373, 1990

(fitting experimental data with dispersion formula: refractiveindex.info)