1. Dependence of the photobleaching on laser radiation wavelength in bismuth-doped germanosilicate fibers
- Author
-
Alexander M. Khegay, E. G. Firstova, A N Gur'yanov, Sergei V. Firstov, Evgeny M. Dianov, Vladimir F. Khopin, Sergey Alyshev, and Mikhail Melkumov
- Subjects
Materials science ,Biophysics ,Analytical chemistry ,chemistry.chemical_element ,02 engineering and technology ,Radiation ,Photon energy ,01 natural sciences ,Biochemistry ,Bismuth ,law.invention ,010309 optics ,law ,0103 physical sciences ,Fiber ,business.industry ,General Chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Laser ,Photobleaching ,Atomic and Molecular Physics, and Optics ,Wavelength ,chemistry ,Optoelectronics ,0210 nano-technology ,Luminescence ,business - Abstract
Photobleaching of IR luminescence in bismuth-doped fibers was studied using laser radiation with different wavelengths: 407, 532, 639, 975, 1460 nm. For each wavelength the bleaching time was determined by fitting a stretched-exponential function to the data measured. It was revealed that the bleaching time increases with the decrease of the photon energy. The measured dependence of the bleaching rate on the launched power at 532 nm is also presented. The effect of temperature on the bleaching rate was also investigated. The role of the oxygen-deficient centers in the bleaching process is discussed.
- Published
- 2017