Characteristics of BENZOPYRAN Laser Dyes in Annealed Silica XEROGEL
| Autor: | Igor M. Pritula, O. N. Bezkrovnaya, V. V. Maslov |
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| Rok vydání: | 2019 |
| Předmět: |
Dye laser
Sociology and Political Science 010405 organic chemistry Chemistry Clinical Biochemistry Analytical chemistry Physics::Optics Laser pumping 010402 general chemistry Laser 01 natural sciences Biochemistry Fluorescence Spectral line 0104 chemical sciences law.invention Clinical Psychology law Molecule Emission spectrum Law Lasing threshold Spectroscopy Social Sciences (miscellaneous) |
| Zdroj: | Journal of Fluorescence. 29:473-478 |
| ISSN: | 1573-4994 1053-0509 |
| DOI: | 10.1007/s10895-019-02357-5 |
| Popis: | The spectroscopic and laser characteristics of two benzopyrane derivatives for 600–670 nm spectrum region of lasing in preliminarily annealed silica xerogel matrices in non-selective cavity under laser pumping at 551 nm have been measured and analysed. The influence of molecular structure of the dyes on their non-radiating losses has been revealed. The specific output laser energy of the studied matrices was approximately equal to the ones for corresponding methanol solutions under the same pumping conditions. The laser spectra of the matrices were displaced to the red region from the fluorescence maximum by about 1000–1500 cm−1 in a nonselective cavity. Such spectral displacement may improve the characteristics of biosensors made on the basis of these matrices because it shifts their emission spectrum to the range of deeper penetration into biological tissues. |
| Databáze: | OpenAIRE |
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