Kalainathan S

Department of Physics

School of Advanced Sciences

Vellore Campus

Redrothu H

Bhagavannarayana G.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Optik - International Journal for Light and Electron Optics

An optically good quality semiorganic single crystal of l-threoninium phosphate (LTP) was grown by solvent evaporation technique at room temperature. Single and powder XRD revealed the orthorhombic crystal structure of LTP with non-centrosymmetric space group Pna2 1 . Linear optical behaviour of the title crystal was realized using UV–visible spectroscopy. The lower cut-off value was found to be 200 nm with broad optical transparency in entire visible region. Functional group and its bonding nature in the titular compound are explored by FTIR spectroscopic analysis. The LTP is thermally stable up to 241 °C and deferent level of decompositions with respect to temperature was analyzed using TG/DTA. Mechanical properties of LTP were studied using Vickers’ microhardness tester. The fracture toughness (K c ), Knoop hardness (H k ), brittleness index (B i ) and elastic stiffness constant (C 11 ) of LTP were calculated using micro-indentation data. Laser damage threshold value of LTP was found to be 4.92 GW/cm 2 which is convincingly high to use the crystal in lasing applications. The second harmonic generation efficiency of LTP is 2.1 times greater than the conventional KDP crystal. The nonlinear refractive index (n 2 ), the nonlinear absorption coefficient (β) and third-order nonlinear susceptibility (χ (3) ) of the title crystal was found to be 1.19 × 10 −15 m 3 /W, 4.742 × 10 −9 m/W and 5.382 × 10 −14 m/W (esu) respectively. The single beam Z-Scan unit equipped with 532 nm continues wave laser was used to measure the third-order nonlinear optical parameters of grown crystal. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.

Journal of Materials Science: Materials in Electronics

Crystal structure, spectroscopic, thermal, mechanical, linear optical, second order and third order nonlinear optical properties of semiorganic crystal: l-threoninium phosphate (LTP)

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Growth, spectroscopy, dielectric and nonlinear optical studies of novel organic NLO crystal: l-Threonine formate

Materials Research Bulletin

Microhardness, chemical etching, SEM, AFM and SHG studies of novel nonlinear optical crystal – l-threonine formate

Physica B: Condensed Matter

Structural, spectral, thermal, dielectric, mechanical and optical properties of urea l-alanine acetate single crystals

International Journal of Science and Research (IJSR)

The Influence of Annealing Temperature on Optical Properties of Tin Oxide (SnO2) Thin Films Prepared by Thermal Evaporation Process

Materials Chemistry and Physics

Growth and characterization of l-leucine l-leucinium picrate single crystal: A new nonlinear optical material

Growth, HR-XRD, optical, thermal, luminescence and nonlinear optical studies of novel organic nonlinear optical crystal: l-Threonine formate

Journal	Data powered by TypesetOptik - International Journal for Light and Electron Optics
Publisher	Data powered by TypesetElsevier BV
ISSN	0030-4026
Open Access	0