Synthesis and characterization of a new nonlinear optical single crystal: L-Lysinium trifluoroacetate by V. Mathivanan, T. Raghavalu, M. Kovendhan, K. Suriya Kumar, S. Gokul Raj, G. Ramesh Kumar, and R. Mohan

Crystal Research and Technology

Cryst. Res. Technol. 43, 248 (2008) - Abstract -

Synthesis and characterization of a new nonlinear optical single crystal: L-Lysinium trifluoroacetate

V. Mathivanan, T. Raghavalu, M. Kovendhan, K. Suriya Kumar, S. Gokul Raj, G. Ramesh Kumar, and R. Mohan

Department of Physics, Presidency College, Chepauk, Chennai 600 005, India

Keywords	optical materials, second-harmonic generation, single crystal growth, L-Lysinium trifluoroacetae
PACS	77.84.-s, 78.20.Nus, 81.10.Dn
DOI	10.1002/crat.200711056

Single crystals of a new L-Lysine salt: L-Lysinium trifluoroacetate {abbreviated as LLyTFA; [(NH₂)-(CH₂)₄-CH-(NH₃)-(COOH)]⁺ CF₃COO^-} were grown by slow evaporation of an aqueous solution at room temperature. The grown crystals were subjected to single crystal X-ray diffraction, FTIR and UV-Vis-NIR spectrum analyses. The UV-Vis-NIR spectrum shows that the absorption is very less in the whole of the region from ultraviolet to near IR. The Kurtz-Perry powder SHG measurement using a Nd:YAG laser of wavelength 1064nm confirms the frequency doubling of the crystal and its powder SHG efficiency was measured as d_eff = 0.96 de_eff(KDP).

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