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Three-Level System Fiber Lasers Incorporating an All-Solid Photonic Bandgap Fiber
Three-Level System Fiber Lasers Incorporating an All-Solid Photonic Bandgap Fiber
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机译：具有全固体光子带隙纤维的三级系统光纤激光器
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摘要
High-power, highly efficient 3-level system fiber lasers are described. The lasers can operate at an average power of about 50W or greater with an efficiency of about 60% or greater with low diffraction limited mode quality. The lasers incorporate an all-solid photonic bandgap fiber that includes a large core (20 micrometers or greater), a high core/clad ratio (greater than 15%), and a waveguide cladding designed to define a transmission band to suppress the 4-level system of the gain medium through determination of the node size of individual nodes of a cladding lattice.
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