Highly efficient 10 cm long fiber laser

Boris Rosenstein, Avry Shirakov, Daniel Belker, Amiel A. Ishaaya

Research output: Contribution to journalArticlepeer-review


We investigate an innovative multipass-pumping technique in a short photonic crystal fiber laser. The technique is based on simple optical elements and shows, in a power oscillator configuration, highly efficient CW and Qswitched operation of an extremely short fiber laser. We report significantly higher absorption of the pump light, compared to a single-pass configuration, which results in an impressive fourfold increase in slope efficiency, up to 60%. Moreover, we show pulse energy of 1.22 mJ and pulse duration shorter than 12 ns, corresponding to a peak power of more than 100 kW.

Original languageEnglish
Pages (from-to)407-410
Number of pages4
JournalOptics Letters
Issue number3
StatePublished - 1 Feb 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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