Refractive index database

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Optical constants of LiB3O5 (Lithium triborate, LBO)
Chen et al. 1989: n(γ) 0.289–1.06 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]



nγ; Room temperature.


1) C Chen et al.. New nonlinear-optical crystal: LiB3O5, J Opt. Soc. Am. 6, 616-621 (1989)
2) F. Hanson and D. Dick. Blue parametric generation from temperature-tuned LiB3O5, Opt. Lett. 16, 205-207 (1991).
* Ref. 2 provides a dispersion formulas based on the experimental data from Ref. 1


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


Lithium triborate, LiB3O5 (LBO)

Lithium triborate (LiB3O5, commonly abbreviated as LBO) is a nonlinear optical crystal that is highly useful for frequency conversion processes, including second and third harmonic generation, sum and difference frequency generation, and optical parametric oscillation. LBO crystals offer wide transparency ranges, broad phase-matching capabilities, and high damage thresholds, making them ideal for high-power laser applications. It is also appreciated for its good mechanical and thermal stability. Overall, LBO is a versatile and widely-used material in various optical and laser-based technologies.

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