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Chapter I Brief Introduction...
barium borate, initially, reported by Chen et al [38] and as a single crystal
material, it has been extensively investigated for applications in the ultraviolet
region [39]. KB5 is a desirable NLO material, which exhibits a low angular
sensitivity and hence proved to be useful for type II second harmonic
generation [40]. Bhar et al [41] have found that ultraviolet radiation is
generated in a lithium tetraborate (Li2B4O7) crystals by Type-I walk-off
compensated sum-frequency mixing (SFM) of the commonly available
Nd:YAG laser radiation. Main inorganic materials applied in nonlinear optics
are as follows:
Table (1.3): Typical application of different inorganic NLO materials.
Title Typical Application
LBO High Power laser harmonics generation and pumped by Nd:YAG laser.
BBO Solid state and Dye laser harmonics generation.
KTP Harmonics generation in UV and Vis region.
KDP Harmonics generation in visible region.
LiNbO3
AgGaS2
SHG and OPO pumped by Nd:YAG laser.
Harmonics generation in IR region of CO2 laser.
BSO Photorefractive, electro-optical and acousto-optical.
KB5
Second to sixth harmonics generation.
KTA Harmonics generation in UV and Vis region.
As the present author deals with growth and characterization of pure
and amino acids doped KDP crystals the properties of KDP crystals are
discussed in a separate section. Most of these crystals are market by various
firms for commercial use, since there is a great demand of good optical quality
crystals.
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