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Characteristics of BENZOPYRAN Laser Dyes in Annealed Silica XEROGEL

Authors
  • Maslov, V. V.1
  • Bezkrovnaya, O. N.2
  • Pritula, I. M.2
  • 1 NAS of Ukraine, O.Ya. Usikov Institute for Radiophysics and Electronics, 12 Acad. Proskury St, Kharkiv, 61085, Ukraine , Kharkiv (Ukraine)
  • 2 NAS of Ukraine, Institute for Single Crystals, 60 Nauky Ave, Kharkiv, 61001, Ukraine , Kharkiv (Ukraine)
Type
Published Article
Journal
Journal of Fluorescence
Publisher
Springer-Verlag
Publication Date
Mar 09, 2019
Volume
29
Issue
2
Pages
473–478
Identifiers
DOI: 10.1007/s10895-019-02357-5
Source
Springer Nature
Keywords
License
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Abstract

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.

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