A remarkable enhancement between optical transparency and SHG efficiency on doped-KHP single crystals
Tóm tắt
Potassium hydrogen phthalate (KHP) single crystals are non-linear optical materials and their transmittance window are remarkably enhanced by an organic dopant such as resorcinol. The present study was mainly focused on the growth and characterization of the single-crystal KHP doped with resorcinol which was synthesized by a slow evaporation solution technique and its dimension was found to be
$$8 \times 7 \times 2.75 \hbox { mm}^{3}$$
at ambient temperature. Vibrational assignments of the functional groups confirmed the presence of dopants. The optical behaviour of the grown crystal was explored by ultraviolet–visible–near-infrared studies which result in 99% of the transmittance with the cut-off wavelength of 250 nm. The mechanical property was analysed by the Vickers microhardness test. The apparent microhardness increases with increasing applied indentation load revealing the reverse indentation size effect behaviour. Organic impurity increases the second harmonic generation efficiency of KHP, suggesting that the molecular alignment in the presence of resorcinol results in enhanced non-linearity.
Tài liệu tham khảo
Gowri S, Uma Devi T, Alen S, Sajan D and Surendra Dilip C 2018 J. Mater. Sci.: Mater. Electron. 29 19710
Raje S, Anbarasi A, Revathi T and Ravi Kumar S M 2016 Mater. Chem. Phys. 177 25
Muthu K, Bhagavannarayan G and Meenakshisundaram S P 2012 Spectrochim. Acta 92 289
Vijilamanonmoni J, Ramaswamy G, Aditya Prasad A, Meenakshisundaram S P and Amutha M 2015 RSC Adv. 5 46282
Ramaswami G and Subbaih M 2013 J. Cryst. Growth 375 26
Sajikumar A C 2016 Int. J. Phys. Appl. 8 53
Kanchana P, Elakkina Kumaran A, Hayakawa Y and Sekar C 2013 Spectrochim. Acta 103 187
Enculescu M 2009 Opt. Mater. 32 281
Meenakshisundaram S P, Parthiban S, Madhurambal G and Mojumdar S C 2008 J. Cryst. Growth 94 21
Muthu K, Bhagavannarayana G, Chandrasekaran C, Parthiban S, Meenakshisundaram S P and Mojumdar S C 2010 J. Therm. Anal. Calorim. 100 793
Krishnakumar V, Manohar S, Nagalakshmi R and Piasecki M 2010 Physica B 405 839
Stanculescu A, Stanculescu F and Alexandru H V 1999 J. Cryst. Growth 198 572
Elakkina Kumaran A, Kanchana P and Sekar C 2012 Spectrochim. Acta 91 370
Gowri S, Uma Devi T, Priya S, Surendra Dilip C, Selvanayagam S and Lawrence N 2015 Spectrochim. Acta143 192
Muthu S P, Perumalsamy R and Kumar B 2012 Mater. Res. Bull. 47 1587
Aarthi J, Gowri S and Surendra Dilip C 2019 J. Mol. Struct. 1181 660
Parthasarathy M and Gopalakrishnan R 2013 J. Cryst. Growth 372 100
Senthil Pandian M, Pattanaboonmee N, Ramaswamy P and Manyum P 2011 J. Cryst. Growth 314 207
Ying W and Eaton D F 1985 Chem. Phys. Lett. 120 441
Sajikumar A C, Vinu S and Krishnan C 2015 Int. J. Eng. Res. Appl. 5 50