Synthesis, Characterizations of Macro, Micro, Irradiated Crystals of KDP, the Standard Non-linear Optical Reference Material for Mechano, Photonic, Electronic Uses

Abstract

The KDP-Potassium Dihydrogen Phosphate crystal is properly grown is confirmed by the single crystal XRD, which is further conceded for Co-60 irradiation with 100 Gy and converted to micro level by the process of milling. The KDP belongs to tetragonal crystalline system as per macro-scale reference and for micro-scale, the pure/bulk is milled for twenty hours for converting into micro-level and it is identified by the morphological pattern. The hardness profile of the KDP pure, micro (KDP-μ), 100 Gy macro (GKDP) are analyzed for the Vicker’s micro-hardness studies and identified the RISE impact as reverse indentation size effect. The micro-KDP morphology of 10 µm represents some proper isolated islands with void space. NLO-SHG of KDP micro and KDP 100 Gy are analyzed and found that pure KDP is 70 mV as the output for KDP as reference, KDP-micro is 71 mV and KDP-100 Gy is 73 mV; employed for phase matching proviso. The electronic filtering of KDP pure, micro, 100 Gy are pronounced in micron as variant influx for opto-electronic portrayal. The frequency doubling of the KDP pure, KDP micro, KDP 100 Gy is twice for normal case, 2.01, 2.07, and 2.15 for all the KDP. The powder diffraction pattern of the KDP confirms the grown KDP crystal samples; the display nature of the devices by KDP is identified for (111) profile. The electronic transition is by UV–visible spectrum for pure, micro and 100 Gy categories and identified the band gap as 6.1386 eV, 6.1084 eV and 6.0784 eV for the KDP-pure, KDP micro and 100 Gy and cut-off is pronounced as 202 nm, 203 nm and 204 nm, correspondingly. All the three samples are of highly transparent; the fluorescence effect of all samples are in the green color. The dielectric behavior of GKDP sample is analyzed and all the polarizations are referred through properly; the higher order value of super cell impacting of 3 × 3 × 3 case of KDP and the nano-tubular of 25 nm are well portrayed.