Investigations on the growth, optical, thermal, dielectric, and laser damage threshold properties of crystal violet dye-doped potassium acid phthalate single crystal

• Published in: Applied physics. A, Materials science & processing Materials science & processing, 2016-03, Vol.122 (3), p.1-8, Article 175
• Main Authors: Rao, G. Babu, Rajesh, P., Ramasamy, P.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Crystal lattices; Crystals; Dyes; Laser damage; Machines; Manufacturing; Nanotechnology; Optical and Electronic Materials; Phthalates; Physics; Physics and Astronomy; Potassium; Processes; Single crystals; Surfaces and Interfaces; Thin Films; Thresholds
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-016-9693-7

Influence of crystal violet dye with different concentration on potassium acid phthalate single crystal grown by conventional method has been studied. No change has been observed in the structure, whereas changes have been observed in the external morphology of the crystal when the dyes are incorporated in the crystal lattice. Thermogravimetric and differential thermal analyses show the onset decomposition temperatures to be at 302, 285, 284, and 285 °C for pure, 0.1, 0.3, and 0.5 mol% crystal violet-doped potassium acid phthalate crystals, respectively. The dielectric measurement was carried out on the grown crystals as a function of frequency at various temperatures. In addition, strong luminescent emission bands at 638, 648, and 640 nm were observed in which the relative intensity was found to be reversed as a result of doping concentration. The laser damage threshold value significantly increased for dye-doped crystal in comparison with pure crystal which may make it suitable for the solid-state dye laser applications.