Nd, Cr, Ce: YAG Nano Powder for Solar Pumped Laser and Crystal Specifications: A Recent Analysis

Abstract

Sol gel co precipitation and commercial mixing methods were used to make Nd,Cr,Ce:YAG Nano powders. Both powders were calcined at temperatures ranging from 900 to 1100°C. The crystals were then vacuum sintered for 8 to 20 hours at temperatures ranging from 1700 to 1750°C. SEM, EDAX, TEM, and TGA-DSC were used to investigate the impact of calcinations and sintering on the Nano-structure. The optical properties of crystals were analysed using UV spectroscopy.The SEM morphology revealed a soft powder with a spherical shape and particle size >90 nm, which was also visible in the TEM images.After sintering, the crystal displayed a high degree of compactness, with mainly one step and very few and tiny pores. The EDX analysis showed the %Y/Al= 0.6 near the theoretical value and the XRD sharp peak confirmed YAG formation. The TGA-DSC curve revealed the crystal's thermal behavior, with a temperature of formation of nearly 750°C for YAG. UV spectroscopy was used to investigate the optical property. Around 300 nm, the absorbance maxima at 0.5 appeared, showing a band region with several peaks for Nd,Cr,Ce:YAG.