Title :
Finite-element analysis of single-frequency silica-based Er3+-Yb3+ co-doped waveguide lasers
Author :
Di Pasquale, F. ; Federighi, M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
fDate :
6/1/1995 12:00:00 AM
Abstract :
Continuous wave laser operations of silica-based Er/sup 3+/-Yb/sup 3+/ co-doped waveguides have been numerically analyzed by means of a finite-element method. The theoretical model, based on propagation-rate equations, describes uniform upconversion by a dipole-dipole interaction between Er/sup 3+/ ions, and includes a pair-induced energy transfer process from Yb/sup 3+/-Er/sup 3+/ Numerical results show that single-frequency operation with slope efficiency higher than 50% and threshold pump powers of few mW can be achieved in short and heavily doped waveguides equipped with input dielectric mirrors and output distributed Bragg reflectors.<>
Keywords :
dipole coupling; distributed Bragg reflector lasers; erbium; finite element analysis; laser accessories; laser beams; laser mirrors; waveguide lasers; ytterbium; 50 percent; SiO/sub 2/:Er,Yb; continuous wave laser operations; dipole-dipole interaction; finite-element analysis; finite-element method; heavily doped waveguides; input dielectric mirrors; output distributed Bragg reflectors; pair-induced energy transfer process; propagation-rate equations; single-frequency operation; slope efficiency; threshold pump powers; upconversion; Dielectrics; Energy exchange; Equations; Erbium; Finite element methods; Laser modes; Laser theory; Optical propagation; Waveguide lasers; Waveguide theory;
Journal_Title :
Photonics Technology Letters, IEEE
