Synthesis, growth and characterization of L-proline dimercuricchloride single crystals for frequency conversion applications

Abstract

A semi-organic nonlinear optical L-proline dimercuricchloride (LPDMC) material has been synthesized. LPDMC single crystals were grown from aqueous solution by a slow cooling method. Good quality single crystals of size 19 × 6 × 3 mm 3 have been grown over a period of 3 weeks. The grown crystals have been subjected to single crystal X-ray diffraction analysis to determine the cell parameters. The title compound crystallizes in the triclinic system with a noncentrosymmetric space group P1 and with unit-cell parameters a = 7.2742(4) Å, b = 9.4472(5) Å, c = 10.4767(6) Å, α = 108.621(3) • , β = 107.260(2) • , γ = 97.353(2) • and volume = 631.51(6) Å 3 . Optical and dielectric properties of the crystals have been studied. The thermal stability of the crystals was determined by thermogravimetric analysis/differential thermal analysis. The second harmonic generation efficiency of the crystals was obtained by the classical powder technique using a Nd:YAG laser and it is found to be 2.5 times that of potassium dihydrogen phosphate.

Nucleation kinetics, growth and analysis of structural, optical, dielectric and mechanical properties of nonlinear optical material: l-proline manganese chloride

“…The peak with strong intensity at 562 cm −1 is attributed to symmetric NH 2 wagging vibrations. The various peak positions are comparable with those reported for L-proline di-mercuric chloride [17].…”

“…The large value of dielectric constant at low frequencies is due to the contributions from all the four polarizations, viz., electronic, ionic, dipolar and space-charge polarizations. The low values of dielectric constant and dielectric loss at high frequencies suggest that the grown crystal contains minimum density of defects with high optical quality [17]. The variations of dielectric constant and dielectric loss with respect to temperature are found to be negligibly small.…”

Investigation on the Linear and Nonlinear Optical Properties of L-Lysine Doped Ammonium Dihydrogen Phosphate Crystal for NLO Applications

“…The dependence of the optical absorption coefficient (α) on the photon energy (hν) used to study the band structure and the types of transitions of electrons. The electronic band transitions can be well understood from the plot of (αhν) 2 verses photon energy as depicted in Fig 4. The wide optical band gap of doped ADP crystal is found to be 4.7 eV suggesting its suitability for optoelectronics applications [14]. The variations of extinction coefficient, refractive index are sequentially shown in Fig 5& 6.…”

Synthesis, crystal growth and characterizations of bis (l-proline) cadmium iodide: a new semi-organic nonlinear optical material

“…This dipolar nature of amino acids helps to improve the crystal hardness [11] and the physical and chemical properties also making them as peculiar candidates in nonlinear optical field [12]. Some crystals of amino acid complexes with the metals show interesting physical properties from application point of view [13,14]. Proline is an essential part of most peptides and proteins where it can modulate the structure and biological function.…”