Growth, optical, mechanical, thermal, second harmonic generation, and Z-scan studies on rhodamine-B-doped l-histidine hydrobromide crystal.

Autor: Satheesh Kumar, G., Kathiravan, V., Thangavel, S., Thilaga, K., Selvarajan, P.
Zdroj: Journal of Materials Science: Materials in Electronics; Jul2023, Vol. 34 Issue 20, p1-10, 10p
Abstrakt: Dye (Rhodamine-B)-doped semi-organic nonlinear optical single crystal of l-histidine hydrobromide (RLHHB) has been grown by conventional slow evaporation technique. The lattice parameters of RLHHB were determined from the single-crystal X-ray diffraction results. Additionally, the functional groups in RLHHB are examined using Fourier transform infrared spectroscopy. The crystal was subjected to energy-dispersive X-ray analysis (EDAX), which revealed its chemical composition. The optical band gap was evaluated as 5.2 eV from Tauc's plot. Vickers microhardness study was carried out to reveal the mechanical properties of the grown crystal. The thermal properties of the title material were analyzed using thermogravimetric and differential thermal analyses. Evaluation of the luminescence properties fluorescence spectrum was recorded. The refractive index of the crystal was determined using Brewster’s angle technique. A typical Kurtz–Perry powder setup with Nd:YAG laser was employed to investigate the particle size-dependent second harmonic generation efficiencies. The outcomes pointed out the existence of phase matching. The Z-scan method was applied to study the third-order nonlinearities of RLHHB crystal. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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