Title :
Optimization of strongly pumped fiber lasers
Author :
Kelson, Ido ; Hardy, Amos
Author_Institution :
Dept. of Electr. Eng., Tel Aviv Univ., Israel
fDate :
5/1/1999 12:00:00 AM
Abstract :
Backreflection of the residual pump power into the cavity, and optimization of the fiber length, may significantly improve the efficiency of a strongly pumped fiber laser. A rate equation model is introduced and studied. Examples for Yb3+-doped fiber lasers, with DBR mirrors at either end, show that employing such a geometry results in higher efficiency with shorter optimal fiber length. Approximate analytical and quasi-analytical expressions are shown to be in excellent agreement with the exact numerical solution of the rate equations
Keywords :
distributed Bragg reflector lasers; fibre lasers; laser cavity resonators; laser mirrors; laser theory; optical pumping; optimisation; ytterbium; DBR lasers; DBR mirrors; Yb3+-doped fiber lasers; backreflection; exact numerical solution; fiber length optimisation; geometry; higher efficiency; laser cavity; quasi-analytical expressions; rate equation model; residual pump power; shorter optimal fiber length; strongly pumped fiber laser optimisation; Equations; Erbium-doped fiber lasers; Fiber lasers; Laser excitation; Laser modes; Mirrors; Optical fibers; Optical reflection; Power lasers; Pump lasers;
Journal_Title :
Lightwave Technology, Journal of
