Customizing optical and dielectric traits of ammonium dihydrogen phosphate (ADP) crystal exploiting Zn2+ ion for photonic device applications

Abstract

Current investigation is aimed to explore the influence of Zn2+ ion on structural, optical and dielectric characteristics of ammonium dihydrogen phosphate (ADP) crystal to explore its widespread suitability for photonic device applications. The slow solvent evaporation technique has been adopted to grow the Zn2+ ion influenced ADP (Zn-ADP) crystal. The energy dispersive spectroscopic technique has been employed to determine the constituent elements of Zn-ADP crystal. The optical transmittance of pure and Zn-ADP crystal has been examined within 200–1100 nm by means of UV–visible spectral analysis. The Kurtz–Perry test has been employed to determine the enhancement in second harmonic generation (SHG) efficiency of ADP crystal due to presence of Zn2+ ion. The SHG efficiency of Zn-ADP crystal is found to be 3.15 times greater than potassium dihydrogen phosphate (KDP) and 1.79 times higher than ADP. The Z-scan analysis has been performed at 632.8 nm to study the third order nonlinear optical attributes (such as nonlinear refraction (n2), absorption (β) and cubic susceptibility (χ3)) of Zn-ADP crystal. Dielectric analysis has been carried out within the temperature range of 30 to 90 °C to evaluate the effect of Zn2+ ion on dielectric constant and dielectric loss of ADP crystal. The thermal stability of the grown crystal has been investigated within the temperature range of 40–500 °C. The application of developed Zn-ADP crystal for photonic devices has been discussed in vision of obtained results.