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Chapter I Brief Introduction...
Yuan et al [92] have reported broadband frequency on DKDP crystals. Hu
Guo Hang et al [93] reported on laser damage in KDP and DKDP crystals.
Recently, Kondji et al [94] have investigated the nonlinear response of a
device consisting of a KDP crystal connected in series in an ac-driven RL
circuit.
Frequency converters and Pockels cell fabricated from KDP and DKDP
crystals are critical components in fusion class laser system. Due to the high
laser power to which the crystals are exposed, their lateral dimensions are
kept large (2 X 103 cm 2 ). To keep fluence below the threshold for laser
damage Yoreo et al [95] described the remarkable set of technological and
scientific advances that lead to a rapid growth process. The technology was
successfully employed to grow KDP crystals for the 192 beams of the
National Ignition Facility, USA, the world largest laser system.
KDP crystal also finds some novel applications. KDP based world’s
largest laser to generate UV beams has been demonstrated [96]. Using
cascaded partially deuterated KDP crystals the broad band frequency tripling
was demonstrated by Wang et al [97]. Moreover, the third harmonic
generation with composite partially deuterated KDP was achieved by Wang et
al [98]. Apart from this, a scheme with non-collinear sum frequency generation
process of broadband third harmonic generation (THG) with two KDP crystals
(one doubler and non mixer) using angular dispersion was proposed by Li and
Zhang [99]. Details of physical, optical and nonlinear optical properties of KDP
crystals along with the relevant data are well reported [100].
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