Single mode laser oscillation in an Nd-doped large core double clad fiber cavity with concatenated adiabatic tapers

Hong K. Seo, Yong Gyu Choi, Kyung Hon Kim, Hoon Jeong, Kyunghwan Oh

Research output: Contribution to journalLetter

3 Citations (Scopus)


We created a new design for an Nd-doped clad-pumped silica fiber laser to enhance the pump absorption and lasing efficiency for a butt-coupled, end-pumped scheme. Two concatenated adiabatic tapers formed within the laser cavity simultaneously removed higher order modes and were spliced to conventional single more fibers. We theoretically analyzed mode propagation along the composite cavity and experimentally achieved continuous wave oscillation in the LP01 mode at 1.06 μm and a laser output power of over 820 mW with a slope efficiency of 27%.

Original languageEnglish
Pages (from-to)255-258
Number of pages4
JournalETRI Journal
Issue number3
Publication statusPublished - 2002 Jun


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Electrical and Electronic Engineering

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