Modeling and optimization of high-power Nd3+-Yb3+ codoped fiber lasers

Eldad Yahel*, Ortwin Hess, Amos A. Hardy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


High-power continuous-wave Nd3+-Yb3+ codoped fiber lasers (NYDFL) are analyzed, based on a rate-propagation equations model. The model takes into account energy transfer between Nd3+-Yb3+, as well as cross relaxation between Nd3+ions, and contributions from high-order modes to the amplified spontaneous emission (ASE). Examples of cladding-pumped NYDFLs with distributed Bragg reflector (DBR) at either end are presented. We demonstrate the optimal laser design by considering the effects of the Nd3+-Yb3+ concentrations, pump wavelengths multiplexing, output mirror reflectivity, and the laser wavelength. Approximate quasi-analytical solutions are shown to be in good agreement with the exact numerical solutions of the rate equations for practical conditions.

Original languageEnglish
Pages (from-to)1601-1609
Number of pages9
JournalJournal of Lightwave Technology
Issue number3
StatePublished - Mar 2006


  • Distributed Bragg reflector (DBR) lasers
  • Neodymium (Nd)
  • Optical fiber lasers
  • Optical fiber theory
  • Ytterbium (Yb)


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