Effect of Lithium Doping on the Properties L-Citrulline Oxalate Monohydrate Nonlinear Optical Crystals
Affiliation(s)
Division for Research in Advanced Materials,Department of Physics, Cochin University of Science and Technology, Cochi, India.
Division for Research in Advanced Materials,Department of Physics, Cochin University of Science and Technology, Cochi, India.
ABSTRACT
Single crystals of pure and Li+ doped L-citrulline oxalate (LCO) crystals are grown successfully by slow evaporation technique. The effect of lithium doping on crystal properties has been studied. The samples are characterized by X-ray powder diffraction, TGA, FTIR, Raman and UV-Vis spectroscopic techniques. The presence of lithium in Li+ doped LCO crystals is estimated using AES. The thermal stability and the optical transparency region are found to be enhanced for the doped samples. The second harmonic generation efficiency of the doped crystal has improved considerably compared to pure L-citrulline oxalate. Lithium doping can hence be considered as a simple and advantageous technique to improve the thermal, optical and non linear optical (NLO) properties of the LCO single crystals.
Single crystals of pure and Li+ doped L-citrulline oxalate (LCO) crystals are grown successfully by slow evaporation technique. The effect of lithium doping on crystal properties has been studied. The samples are characterized by X-ray powder diffraction, TGA, FTIR, Raman and UV-Vis spectroscopic techniques. The presence of lithium in Li+ doped LCO crystals is estimated using AES. The thermal stability and the optical transparency region are found to be enhanced for the doped samples. The second harmonic generation efficiency of the doped crystal has improved considerably compared to pure L-citrulline oxalate. Lithium doping can hence be considered as a simple and advantageous technique to improve the thermal, optical and non linear optical (NLO) properties of the LCO single crystals.
KEYWORDS
Doping; X-Ray Diffraction; Growth from Solutions; Single Crystal Growth; Nonlinear Optic Material
Doping; X-Ray Diffraction; Growth from Solutions; Single Crystal Growth; Nonlinear Optic Material
Cite this paper
V. Sreevalsa and S. Jayalekshmi, "Effect of Lithium Doping on the Properties L-Citrulline Oxalate Monohydrate Nonlinear Optical Crystals," Open Journal of Metal, Vol. 2 No. 4, 2012, pp. 82-86. doi: 10.4236/ojmetal.2012.24013.
V. Sreevalsa and S. Jayalekshmi, "Effect of Lithium Doping on the Properties L-Citrulline Oxalate Monohydrate Nonlinear Optical Crystals," Open Journal of Metal, Vol. 2 No. 4, 2012, pp. 82-86. doi: 10.4236/ojmetal.2012.24013.
References
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[1] R. W. Boyd, “Nonlinear Optics,” Academic Press, San Diego, 1992. [2] D. S. Chemla and J. Zyss, “Nonlinear Optical Properties of Organic Molecules and Crystals,” Vol. 1-2, Academic Press, New York, 1987. [3] R. F. Belt, G. Gashurov and Y. S. Liu, “KTP as a Harmonic Generator of Nd:YAG Lasers,” Laser Focus, Vol. 21, No. 10, 1985, pp. 110-124. [4] R. S. Calark, “Getting the Laser Word to Subs,” Photonics Spectra, Vol. 22, 1988, pp. 135-136. [5] R. J. Gambino, “Optical Storage Disk Technology,” Bulletin of Materials Research Society, Vol. 15, 1990, pp. 20-22. [6] G. Rameshkumar, S. Gokul Raj, R. Mohan and R. Jayavel, “Influence of Isoelectric pH on the Growth Linear and Nonlinear Optical and Dielectric Properties of L-Threonine Single Crystals,” Crystal Growth and Design, Vol. 6, No. 6, 2006, pp. 1308-1310. doi:10.1021/cg050438g [7] W. D. Cheng and J. X. Lu, “Certain Inorganic Borate Crystals as Excellent Second Order Nonlinear Optical Materials in the UV-Region,” Chinese Journal of Structunal Chemistry, Vol. 16, 1997, pp. 81-85. [8] M. Fujimoto and Y. Tomkiewicz, “EPR of Cationic Radicals Formed by UV Irradiation of Cu2+ doped Amino Acid Crystals at 77?K: Glycine and Dimethylalanine,” Journal of Chemical Physics, Vol. 56, No. 7, 1972, pp. 3317-3320. doi:10.1063/1.1677698 [9] B. Suresh Kumar, M. R. Sudarsana Kumar and K. Rajendra Babu, “Growth and Characterization of Pure and Lithium Doped L-Alanine Single Crystals for NLO Devices,” Crystal Research and Technology, Vol. 43, No. 7, 2008, pp. 745-750. doi:10.1002/crat.200711109 [10] P. P. Kumar, V. Manivannan, S. Tamilselvan, S. Senthil, V. A. Raj, P. Sagayaraj and J. Madhavan, “Growth and Characterization of a Pure and Doped Nonlinear Optical L-Histidine Acetate Single Crystals,” Optics Communications, Vol. 281, No. 10, 2008, pp. 2989-2995. doi:10.1016/j.optcom.2008.01.058 [11] P. P. Kumar, V. Manivannan, P. Sagayaraj and J. Madhavan, “Growth and Characterization of Pure and Doped NLO L-Arginine Acetate Single Crystals,” Bulletin of Materials Science, Vol. 32, No. 4, 2009, pp. 431-435. doi:10.1007/s12034-009-0063-3 [12] V. G. Sreevalsa and S.Jayalekshmi, “Investigations on the Growth and Characterization of L-Citrulline Oxalate Monohydrate Single Crystal,” Journal of Crystal Growth, Vol. 324, No. 1, 2011, pp. 172-176. doi:10.1016/j.jcrysgro.2011.03.017 [13] V. G. Sreevalsa and S. Jayalekshmi, “Studies on the Thermal, Optical and Dielectric Properties of a New Nonlinear Optical Crystal—L-Citrulline Oxalate Grown by Slow Evaporation Technique,” Transactions of the Indian Institute of Metals, Vol. 64, No. 2, 2011, pp. 205-208. doi:10.1007/s12666-011-0040-6 [14] D. Rajan Babu and D. Jayaraman, “Growth and Characterization of Non-Linear Optical L-Alanine Tetrafluoroborate (L-AlFB) Single Crystals,” Journal of Crystal Growth, Vol. 245, No. 1-2, 2002, pp. 121-125. [15] K. Ambujam, S. Selvakumar, D. Prem Anand, G. Mohamed and P. Sagayaraj, “Crystal Growth, Optical, Mechanical and Electrical Properties of Organic NLO Material γ-Glycine,” Crystal Research and Technology, Vol. 41, No. 7, 2006, pp. 671-677. doi:10.1002/crat.200510647 [16] S. K. Kurtz and T. T. Perry, “A Powder Technique for the Evaluation of Nonlinear Optical Materials,” Journal of Applied Physics, Vol. 39, No. 8, 1968, pp. 3798-3813. doi:10.1063/1.1656857