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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 30, Iss. 20 — Oct. 15, 2012
  • pp: 3235–3240

Theoretical Modeling of Ho-Doped Fiber Lasers Pumped by Laser-Diodes Around 1.125 μm

Chongyuan Huang, Yulong Tang, Shengli Wang, Rui Zhang, Jun Zheng, and Jianqiu Xu

Journal of Lightwave Technology, Vol. 30, Issue 20, pp. 3235-3240 (2012)

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A theoretical model to describe Holmium-doped fiber lasers pumped by Laser-diodes around 1.125 μm is presented. With considerations of important energy transfer processes, such as laser re-absorption, cross-relaxation (CR), energy transfer upconversion (ETU), and excited state absorption (ESA), good agreement is achieved between the simulations and experimental measurements. The ESA process is found playing an important role to the fiber laser performance, and the CR and ETU processes make a negative contribution to the lasers. On the basis of the model, optimization of the lasers threshold and slope efficiency as well as output power on the length of active media, the output coupling, pump wavelength, and Ho$^{3+}$ ions concentration are investigated. It is found that lower doping concentration (about 5000 ~ 10000 ppm) for the fiber lasers is preferred for efficient operation.

© 2012 IEEE

Chongyuan Huang, Yulong Tang, Shengli Wang, Rui Zhang, Jun Zheng, and Jianqiu Xu, "Theoretical Modeling of Ho-Doped Fiber Lasers Pumped by Laser-Diodes Around 1.125 μm," J. Lightwave Technol. 30, 3235-3240 (2012)

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