Journal of Applied Physics · 2006 · 14 citations · 18 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsSpectroscopic AnalysisSpectroscopyAtomic Emission SpectroscopyEmission SpectroscopyFluorescence SpectroscopyLaser SpectroscopyOptical FibersOptical SpectroscopyComposition DependenceComposition Dependence Of PropertiesEmission Intensity AnalysisEmission SpectraEmission Spectra AnalysisEmission Spectral AnalysisFiber SpectroscopyFluorescence Emission Spectra
We have demonstrated the use of microspectroscopy for measuring the Cr3+ and Cr4+ fluorescence spectra in double-clad Cr:YAG crystal fiber. The emission spectra of Cr3+ and Cr4+ are detected from core and inner cladding. The Cr3+ spectrum in the inner cladding shows a broad-band emission from 650to950nm, while the emission of Cr4+ occurs in the range of 1.15–1.55μm with a peak around 1.22μm. The characteristic of Cr ion at high-field sites shows a narrow-band emission (E2→A24 for Cr3+; E1→A23 for Cr4+), whereas that at low-field sites shows a broad-band emission (T24→A24 for Cr3+; T23→A23 for Cr4+). The emission intensity ratio of high-field sites to low-field sites in the inner cladding with different compositions has been investigated. It varies from 20% to 29% for Cr3+ and from 7.1% to 11.3% for Cr4+ when the concentration of SiO2 increases from 26.9to43.0wt%.
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Pr^3+-doped fluoride fiber amplifier operating at 131 μm
Yasutake Ohishi, E. Snitzer, George H. Sigel et al. · Optics Letters · 1991 · 265 citations