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LBO Crystal

LBO (Lithium Triborate or LiB3O5) is an excellent crystal which has very wide transparency, high nonlinear coupling, high damage threshold and good chemical and mechanical properties. We had grown LBO for more than 10 years and we now have much experience in it.
INNOWIT’s LBO is grown by an improved flux method and we could provides
high quality LBO crystals for many applications.

INNOWIT's LBO is applied for:

  • High power Nd:YAG and Nd:YLF lasers for R&D and military applications.

  • Ti:Sapphire, Alexandrite and Cr:LiSAF lasers.

  • Medical and industrial Nd:YAG lasers.

  • Diode laser pumped Nd:YVO4, Nd:YAG and Nd:YLF lasers.

  • Frequency-tripling (THG) of Nd:YAG and Nd:YLF lasers.

  • Optical parametric amplifiers (OPA) and oscillators (OPO) pumped by Excimer lasers and harmonics of Nd:YAG lasers.

  • Frequency doubling (SHG) and tripling (THG) of high power Nd:YAP laser at 1.34mm.

INNOWIT 's LBO is featured by:

  • Broad transparency range from 160nm to 2.6 mm (SHG range from 0.55mm to 2.6 mm).

  • Type I and type II non-critical phase-matching (NCPM) over a wide wavelength range.

  • Relatively large effective SHG coefficient (about three times larger than that of KDP).

  • High damage threshold (18.9 GW/cm2 for a 1.3ns laser at 1.054mm)

  • Wide acceptance angle and small walk-off

  • High optical quality (homogeneity Dn≈ 10-6/cm) and free of inclusion.

INNOWIT'S Warranty on LBO Specifications

Dimension tolerance:



λ/8 @633nm

Surface quality: Scratch/Dig

10/5 (MIL-PRF-13830B)


better than 20 arc sec.


better than 5 arc min

Angle tolerance:

<± 0.2°

AR coating:

AR coating

Residual reflectivity:

R1064<0.2% ,R532<0.5%,R355<0.5%

Clear aperture:

>90% central area

Transmitting wavefront distortion:

less than λ/8 @ 633nm

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