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  • Lithium Triborate (LiB3O5, LBO)
Jan 2004
CASTECH INC.Request Info
Nonlinear Optical Crystal
FUZHOU, China, Jan. 8 -- Lithium Triborate (LiB3O5 or LBO) is an excellent nonlinear optical crystal discovered and developed by the Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences. Fujian Castech Crystals Inc. has exclusive rights to produce, manufacture and market the patented LBO crystal and its NLO devices. (Patent numbers: US 4,826,283, Japan 2023845 China CN88102084.2)

Castech’s LBO features:

· broad transparency range from 160 nm to 2600 nm

· high optical homogeneity (dn»10-6/cm) and free of

· relatively large effective SHG coefficient (about three times that of KDP) high damage threshold

· acceptance angle and small walk-off I and type II non-critical phase matching (NCPM) in a wide wavelength spectral NCPM near 1300 nm

Castechcoffers for its LBO:

· strict quality control

· large crystal size up to 15x15x20 mm3 and maximum length of 60 mm

· AR-coating, mounts and repolishing services

· in-stock crystals in a large quantity

· very fast delivery (10 days for polished only, 15 days for AR-coated)

For more information, visit:; e-mail:

No.155, Yangqiao West Road
Fuzhou,Fujian 350002 P.R.China
Phone: +86-591-3710533
Fax: +86-591-3711593


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nonlinear optical crystal
An optical crystal that possesses a strong nonlinear dielectric response function to optical radiation. A material with a strong second-order nonlinearity must not possess a center of symmetry. See phase matching.
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