Study on Er –Yb energy transfer in Er–Yb Co-doped phosphate waveguide lasers

Abstract

Abstract:

Er-Yb co-doped phosphate glass waveguide lasers are theoretically studied in order to understand the role of the energy transfer in Er-Yb co-doped system. The rate equations of Er-Yb codoped system coupled with the laser signal and pump photon flux equations are solved using overlapping integral method, the Er-Yb energy transfer processing is studied in detail, and the effects of Er-Yb energy transfer on the characteristics of waveguide lasers pumped by a 980-nm source are discussed. Numerical results demonstrate that effect of Er-Yb energy transfer (cross-relaxation factor) on the output power of laser is not obvious. Yb3+ ions play the role of eliminating the “cluster” of Er3+ due to high concentration and improving the pumping efficiency.

Key words: laser techniques, lasers, waveguide laser, Er-Yb co-doped phosphate glass, Er-Yb energy transfer

CLC Number:

TN248

CHEN Hai-Yan. Study on Er –Yb energy transfer in Er–Yb Co-doped phosphate waveguide lasers[J]. J4, 2009, 26(4): 421-424.

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