Optical constants of LiBr (Lithium bromide)
Li 1976: n 0.21–20 µm
Complex refractive index (n+ik)
Derived optical constants
Dispersion formula
$$n^2-1=1.88+\frac{0.28λ^2}{λ^2-0.164^2}+\frac{10.07λ^2}{λ^2-57.80^2}$$Comments
297 K (24 °C).
References
H. H. Li.
Refractive index of alkali halides and its wavelength and temperature derivatives.
J. Phys. Chem. Ref. Data 5, 329-528 (1976) and references therein.
* Sellmeier formula derivation is based on a single data point and knowledge of the dielectric constants and the characteristic absorption peaks.
Data
Additional information
About Lithium bromide
Lithium bromide (LiBr) is a salt that is most commonly used as a desiccant in air-conditioning systems. It is highly hygroscopic, easily absorbing water from the air. In the realm of optics, it is used less frequently but can serve as a transparent material in the infrared range. LiBr is soluble in water, alcohol, and other polar solvents, and it is generally not suitable for high-power optical applications due to its hygroscopic nature, which can lead to degradation over time when exposed to moisture.
Other names and variations:- LiBr