Kumar, M. Krishna and Sudhahar, S. and Pandi, P. and Bhagavannarayana, G. and Kumar, R. Mohan (2014) Studies of the structural and third-order nonlinear optical properties of solution grown 4-hydroxy-3-methoxy-4 '-N '-methylstilbazolium tosylate monohydrate crystals. Optical Materials, 36 (5). 988-995 . ISSN 0925-3467

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Abstract

An organic nonlinear optical crystal, 4-hydroxy-3-methoxy-4'-N'-methylstilbazolium tosylate monohydrate (VMST) was grown from methanol:water mixed solvent by slow cooling method. The crystal structure, morphology, composition and melting point of grown crystals were studied through single crystal X-ray diffraction, infrared spectrum and differential scanning calorimetry analyses respectively. The crystalline perfection of grown crystal was evaluated by high-resolution X-ray diffractometry. The cut-off wavelength, optical transmission, refractive index and band gap energy of grown crystal were determined from UV-Visible spectral analysis. The photoluminescence spectral study revealed the transition mechanism of ions. The self-focusing Z-scan technique and degenerate four wave mixing technique have been employed to observe the third-order nonlinear optical property of the grown crystal. The surface laser damage threshold value of VMST crystal was measured by using Nd:YAG laser.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Organic crystals Crystal growth UV–Visible spectroscopy Z-scan technique Degenerate four wave mixing Laser damage threshold
Subjects:	Materials Science Optics
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	20 Nov 2015 06:01
Last Modified:	20 Nov 2015 06:01
URI:	http://npl.csircentral.net/id/eprint/1558

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