Refractive index database

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Optical constants of LiNbO3 (Lithium niobate)
Zelmon et al. 1997: n(e) 0.4–5.0 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]



21 °C. Extraordinary ray (e). Congruently grown lithium niobate.


D. E. Zelmon, D. L. Small, and D. Jundt. Infrared corrected Sellmeier coefficients for congruently grown lithium niobate and 5 mol.% magnesium oxide-doped lithium niobate, J. Opt. Soc. Am. B 14, 3319-3322 (1997)


[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]


Lithium niobate, LiNbO3

Lithium niobate (LiNbO3) is a ferroelectric material with excellent electro-optic, piezoelectric, and nonlinear optical properties. It is widely used in integrated optics, optoelectronic devices, and telecommunication applications. LiNbO3 crystals are often employed in modulators, switches, waveguide devices, and frequency doublers. Due to its strong Pockels effect, it is a popular choice for Q-switching in solid-state lasers and is a key material in the fabrication of surface acoustic wave (SAW) devices. The material is generally transparent in the wide wavelength range from the near-infrared to the ultraviolet, making it versatile for various optical applications.

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