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Energy transition characterization of 1.18 and 1.3 μm bands of bismuth fiber by spectroscopy of the transient oscillations.
- Source :
-
Applied Physics Letters . 5/9/2011, Vol. 98 Issue 19, p191108. 3p. 4 Graphs. - Publication Year :
- 2011
-
Abstract
- The experimental evidence of laser transition type in bismuth-doped silica fibers operating at different spectral bands is presented. Spectrally resolved transient (relaxation) oscillations studied for a Bi-doped fiber laser at room and liquid-nitrogen temperatures allow to identify the three- and four-level energy bands. 1.18 μm short-wavelength band is found to be a three-level system at room temperature with highly populated terminal energy level of laser transition. The depopulation of ground level by cooling the fiber down to liquid-nitrogen temperature changes the transition to four-level type. Four-level energy transition distinguished at 1.32 μm exhibits the net gain at room temperature. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SILICA
*SILICON compounds
*OXIDES
*SPECTRUM analysis
*NONMETALS
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 98
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 60594513
- Full Text :
- https://doi.org/10.1063/1.3590266