Review Article
Open Access
Chemical Etching Studies of Pure and Amino acids Doped KDP Crystals
K. D. Parikh1*, D. J. Dave2, M. J. Joshi2 and B. B. Parekh3
1 M. P. Shah Arts and Science College, Surendranagar, 363 001, India.
2 Department of Physics, Saurashtra University, Rajkot, 360 005, India.
3 Pandit Deendayal Petroleum University, Gandhinagar, 382 007, India.
K. D. Parikh et al /Int.J. Chemical Concepts. 2016,2(1),pp 50-56.
Abstract
Potassium dihydrogen phosphate (KDP) and amino acids are non-linear optical material
used for laser frequency conversion. The pure and amino acids (L-arginine, L-lysine and L-alanine)
doped KDP crystals were grown by slow solvent evaporation technique. The amino acid doping was
confirmed by CHN analysis, paper chromatography and FTIR studies. The (100) face of pure and
amino acids doped KDP crystals were selected for the chemical etching studies. The etchant used for
all crystals were glacial acetic acid (CH3COOH). The etching temperature was varied from 25 0C to 40
0C with increment of 5 0C. The etch pits was measured and Arrhenius law applied. The values of
kinetic and thermodynamic parameters ware evaluated from width of etch pit.
Keywords
Dislocation, Etch pits, Reactivity, Kinetic parameter and Thermodynamic parameter.