Description

Lithium triborate (LiB3O5 or LBO) is an excellent nonlinear optical crystal. It combines a wide transparency range (*******0 nm), moderate nonlinear coupling, relatively high damage threshold and good chemical and mechanical properties. LBO crystals have phase matchable conditions for SHG and THG of infrared lasers, using either Type I or Type II interactions.
LBO has non-critical phase matching conditions (NCFM) for Type I SHG at ********0nm. In this case, LBO is free of walk-off limitations and, therefore, long LBO crystals can be used. LBO crystals are free of the grey track effect and as a result, are very useful in high power green lasers.
~broad transparency range from **0nm to ***0nm.
• high optical homogeneity (dn»***6/cm) and free of inclusion;
• relatively large effective SHG coefficient (about three times that of KDP);
• high damage threshold;
• wide acceptance angle and small walk-off;
• type I and type II non-critical phase matching (NCPM) in a wide wavelength range;