Single-transverse-mode output from a fiber laser based on multimode interference

X. Zhu, A. Schülzgen, H. Li, L. Li, Q. Wang, S. Suzuki, V. L. Temyanko, J. V. Moloney, N. Peyghambarian

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

An alternative original approach to achieve single-transverse-mode laser emissions from multimode (MM) active fibers is demonstrated. The fiber cavity is constructed by simply splicing a conventional passive single-mode fiber (SMF-28) onto a few centimeters-long active MM fiber section whose length is precisely controlled. Owing to the self-imaging property of multimode interference (MMI) in the MM fiber, diffraction-limited laser output is obtained from the end of the SMF-28, and the MMI fiber laser is nearly as efficient as the corresponding MM fiber laser. Moreover, because of the spectral filtering effect during in-phase MMI, the bandwidth of the MMI fiber laser is below 0.5 nm.

Original languageEnglish (US)
Pages (from-to)908-910
Number of pages3
JournalOptics letters
Volume33
Issue number9
DOIs
StatePublished - May 1 2008

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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