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Second harmonic generation and laser damage threshold studies of pure and doped potassium dihydrogen phosphate single crystals

M. KRISHNA MOHAN1,* , S. PONNUSAMY1, C. MUTHAMIZHCHELVAN1

Affiliation

  1. Centre for Materials Science and Nanodevices, Department of Physics and Nanotechnology, SRM University, Kattankulathur, Kancheepuram-603 203, India

Abstract

Single crystals of Potassium dihydrogen Phosphate (KDP) have been grown from water using slow evaporation technique at constant temperature. Good quality seed crystals were obtained. The diffraction data of the grown crystals were determined by Powder X-Ray Diffraction (XRD). The XRD data were indexed using Unit cell software and the lattice parameters were calculated. The results were in good accordance with the literature. The KDP crystals were doped with cobalt, nickel, manganese, paranitrophenol, in view of modification of the properties of KDP crystal. It is found from the Powder XRD, that the incorporation of dopants slightly alters the lattice parameters. The Second Harmonic Generation (SHG) studies were carried out using Kurtz Perry technique. The SHG efficiencies of the doped crystals were found to be 1.12, 1.08, 1.08 and 1.20 times greater than the standard KDP crystals. The laser damage thresholds were determined for the pure and doped KDP crystals using single shot laser mode. It is found that the addition of dopants increases the damage threshold of the crystals, making it suitable for applications..

Keywords

Nonlinear Optical Materials, Second Harmonic Generation, X -Ray Diffraction, Laser Damage Threshold.

Citation

M. KRISHNA MOHAN, S. PONNUSAMY, C. MUTHAMIZHCHELVAN, Second harmonic generation and laser damage threshold studies of pure and doped potassium dihydrogen phosphate single crystals, Optoelectronics and Advanced Materials - Rapid Communications, 11, 3-4, March-April 2017, pp.153-156 (2017).

Submitted at: March 2, 2016

Accepted at: April 6, 2017