Analytical model for output optimization of fiber-coupled laser-diode end-pumped lasers

Yung-Fu Chen, S. C. Wang, Ting Ming Huang, C. F. Kao, Chi L. Wang

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A general model has been developed for the output power optimization of fiber-coupled laser-diode end-pumped lasers by including the thermal effect into the analysis. The optical path difference (OPD) distribution has been derived as a function of the pump-beam quality, focus position of pumping light, and pump radius at the focal plane under the assumption that the end faces of the crystal are thermally insulated. With the derived OPD, the diffraction losses arising from thermal-induced spherical aberration have been estimated by the strehl intensity ratio. The practical example of a Nd:YVO4 laser pumped by a 1.2 W fiber-coupled laser diode is considered to illustrate the utility of the present model. Experimental results have shown a fairly good agreement with the theoretical predictions.

Original languageEnglish
Pages (from-to)35-45
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1 Dec 1997
EventModeling and Simulation of Higher-Power Laser Systems IV - San Jose, CA, United States
Duration: 12 Feb 199712 Feb 1997


  • Fiber-coupled laser-diodes
  • Output power optimization
  • Pump-beam quality
  • Thermal effect


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