A novel design for a high brightness diode pumped fiber laser source

Lasing action is reported in a new type of fiber design. The fiber consists of an undoped core and a doped glass cladding surrounded by a plastic coating. The refractive indices obey the relation n clad> n core⪢ n coat. The refractive index/doping concentration distribution recommends to the desi...

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Bibliographic Details
Published inOptics communications Vol. 122; no. 4; pp. 163 - 168
Main Authors Glas, P., Naumann, M., Schirrmacher, A.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 1996
Elsevier Science
Subjects
Exact sciences and technology
Fiber lasers
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Near field
Optical fibers
Output power
Brightness
Laser pumping
Refractive index
Step index
Glass
Doped materials
Far field
Experimental study
Design
Plastic coating
Solid state lasers
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Summary:Lasing action is reported in a new type of fiber design. The fiber consists of an undoped core and a doped glass cladding surrounded by a plastic coating. The refractive indices obey the relation n clad> n core⪢ n coat. The refractive index/doping concentration distribution recommends to the designation M-profile fiber (MPF). The brightness and the output power of the MPF laser may at least be as high as that of a double clad fiber (DCF) laser. For the first properly working MPF laser the near and far field intensity distributions are reported along with measurements concerning the pump light distribution in the fiber, the output power, lasing spectrum and polarisation of the emitted radiation.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(95)00537-4