Jassim Mohammed Jassim, Majid F Haddawi, M J Mohammed, S M Hamidi
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引用次数: 0
Abstract
In this work, we studied thermal blooming phenomena using a CW laser with a wavelength of 405 nm and an optical power of 100 mW focused on a quartz cuvette containing dye solution with different types of nanoparticles to generate thermocavitation. We observed that self-phase modulation (SPM) typical far-field loops suddenly shifted into a completely different diffraction pattern when the dye solution was heated beyond the self-phase modulation (SPM) using a focused laser beam. After SPM, this process, known as thermal blooming (TB), can be considered the next phase. In addition, we observed the effect of (Ag NWs, Fe₂O₃, and AgNWs: Fe₂O₃) NPs on the speed of bubble formation and their number. also observed random laser actions in both the presence and absence of thermal cavitation. The presence of a thermal cavity was found to have a significant impact on the pump threshold, spectral linewidth, and intensity of emission spectra.
期刊介绍：
Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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