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;
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