Title :
Modeling and optimization of short Er3+-Yb3+ codoped fiber lasers
Author :
Yahel, Eldad ; Hardy, Amos A.
Author_Institution :
Dept. of Electr. Eng.Phys. Electron., Tel Aviv Univ., Israel
Abstract :
A theoretical study of short Er3+- Yb3+ codoped fiber lasers (EYDFLs) is presented. Examples include centimeter-length EYDFLs pumped at 978 nm, with distributed Bragg reflector (DBR) mirrors at both fiber ends. Approximate quasi-analytical solutions are shown to be in excellent agreement with the exact numerical solution of the rate equations. Using the quasi-analytical model, we demonstrate a design optimization of a short EYDFL. The effects of the Yb3+ concentration, laser wavelength, output mirror reflectivity, and pump wavelength are considered and discussed with relation to the optimal laser length and output efficiency.
Keywords :
distributed Bragg reflector lasers; erbium; fibre lasers; laser mirrors; laser theory; optical pumping; ytterbium; 978 nm; Yb3+ concentration; approximate quasi-analytical solutions; centimeter-length EYDFL; design optimization; distributed Bragg reflector mirrors; exact numerical solution; fiber ends; laser wavelength; modeling; optimal laser length; output efficiency; output mirror reflectivity; pump wavelength; rate equations; short EYDFL; short Er3+-Yb3+ codoped fiber lasers; Design optimization; Distributed Bragg reflectors; Equations; Erbium; Fiber lasers; Laser modes; Laser theory; Mirrors; Pump lasers; Reflectivity;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2003.818307
