Nucleation thermodynamical studies on nonlinear optical l-alanine single crystals

Raghavalu, Thenneti; Kumar, G. Ramesh; Raj, S. Gokul; Mathivanan, V.; Mohan, R.

doi:10.1016/j.jcrysgro.2007.05.053

Cited by 28 publications

(11 citation statements)

References 16 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…that show higher orders of SHG. [8][9][10][11] In the present article, we report the crystalline perfection, strain calculations using the Hall-Williamson equation with the help of powder X-ray diffraction (PXRD), photopyroelectric (PPE) measurements and surface morphological studies of LPT. Nanoindentation studies were performed to find the load dependence and independence of hardness and to measure the Young's modulus using the Oliver-Pharr method.…”

Section: Introductionmentioning

confidence: 99%

Growth, structural and mechanical analysis of a single crystal ofl-prolinium tartrate: a promising material for nonlinear optical applications

et al. 2014

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Growth, structural and mechanical analysis of a single crystal ofl-prolinium tartrate: a promising material for nonlinear optical applications

et al. 2014

View full text Add to dashboard Cite

“…Large-size good quality single crystals were first grown by Misoguti et al 24 Growth and characterization of L-alanine single crystals have been reported by many authors. 2,20,21 Good transparency in the visible and near ultraviolet spectral range and the energy gap about 5 eV make the L-alanine crystal a good candidate for applications in nonlinear optics. 21,22 Misoguti et al 24 have proved that the L-alanine's efficiency of SHG has a value equal to one-third of that for the standard potassium dihydrogen phosphate (KDP) and that this crystal represents type II phase-matching and the angles of maximum efficiency conditions are q max ¼ 50 and 4 max ¼ 90 .…”

Section: Introductionmentioning

confidence: 99%

Dispersion of linear and non-linear optical susceptibilities for amino acid 2-aminopropanoic CH3CH(NH2)COOH single crystals: experimental and theoretical investigations

Reshak¹,

Auluck²,

Štys³

et al. 2011

J. Mater. Chem.

View full text Add to dashboard Cite

A comprehensive experimental and theoretical investigation of dispersion of the linear and nonlinear optical susceptibilities for amino acid L-alanine single crystals is reported. The state-of-the-art full potential linear augmented plane wave method, within a framework of the density functional theory was applied. The atomic positions from X-ray diffraction have been optimized so that the force on each atom is around 1 mRy au À1 . This relaxed geometry has been used for the theoretical calculations. The complex dielectric susceptibility dispersion, its zero-frequency limit and the birefringence of amino acid L-alanine single crystals were studied. The crystal exhibits a large uniaxial dielectric anisotropy resulting in a significant birefringence. The calculated birefringence at static limit is 0.072 and 0.074 at l ¼ 1064 nm (corresponding to 1.165 eV) in good agreement with the measured value (0.073). We also report calculations of the complex second-order optical susceptibility dispersions for the principal tensor components: c (2) 123 (u), c (2) 231 (u) and c (2) 312 (u). The calculated second order susceptibility tensor components |c (2) 123 (u)|, |c (2) 231 (u)|, and |c ( 2) 312 (u)| at l ¼ 1064 nm are compared with those obtained from our measurements performed using the 25 ps Nd:YAG pulsed laser at l ¼ 1064 nm. Our calculations are in reasonably good agreement with our experimental data. In addition we have calculated the microscopic second order hyperpolarizability, b 123 , vector component along the principal dipole moment directions for the dominant component c (2) 123 (u) and it is found to be 0.21 Â 10 À21 pm V À1 in the static limit and 0.27 Â 10 À21 pm V À1 at 1.165 eV (l ¼ 1064 nm) in comparison with our measured value (0.31 Â 10 À21 pm V À1 ) at l ¼ 1064 nm. Additional study of the second order susceptibilities versus the external laser treatment is performed.

show abstract

“…Recently we have reported on the growth, deuteration and nucleation studies on L-alanine single crystals [14,15]. In the present investigation, good optical quality L-alanine single crystals have been grown from aqueous solution by slow cooling and seed rotation techniques.…”

Section: Introductionmentioning

confidence: 95%

Structural and hardness of nonlinear optical L-alanine single crystals

Raj¹,

Kumar²

2011

Adv. Mater. Lett.

Self Cite

View full text Add to dashboard Cite

Single crystals of pure and Deuterated L-alanine have been grown by both slow cooling and seed rotation techniques. The grown nonlinear optical crystals were subjected to single crystal X-ray diffraction for determining its lattice parameters and morphology. Thermal expansion measurements were carried for the Deuterated crystals of L-alanine using thermomechanical analyzer in order to ascertain the strain tensors along the three mutually perpendicular crystallographic directions. Microhardness study was also undergone on deuterated L-alanine single crystals on a prominent plane for determining the mechanical strength of the grown crystals. The results have been discussed in detail.

show abstract

Nucleation thermodynamical studies on nonlinear optical l-alanine single crystals

Cited by 28 publications

References 16 publications

Growth, structural and mechanical analysis of a single crystal ofl-prolinium tartrate: a promising material for nonlinear optical applications

Growth, structural and mechanical analysis of a single crystal ofl-prolinium tartrate: a promising material for nonlinear optical applications

Dispersion of linear and non-linear optical susceptibilities for amino acid 2-aminopropanoic CH3CH(NH2)COOH single crystals: experimental and theoretical investigations

Structural and hardness of nonlinear optical L-alanine single crystals

Contact Info

Product

Resources

About