Emission beyond 4 μm and mid-infrared lasing in a dysprosium-doped indium fluoride (InF3) fiber

Matthew R. Majewski*, Robert I. Woodward, Jean-Yves Carreé, Samuel Poulain, Marcel Poulain, Stuart D. Jackson

*Corresponding author for this work

Research output: Contribution to journalLetter

50 Citations (Scopus)

Abstract

Optical emission from rare-earth-doped fluoride fibers has thus far been limited to less than 4 μm. We extend emission beyond this limit by employing an indium fluoride (InF3) glass fiber as the host, which exhibits an increased infrared transparency over commonly used zirconium fluoride (ZBLAN). Near-infrared pumping of a dysprosium-doped InF3 fiber results in broad emission centered around 4.3 μm, representing the longest emission yet achieved from a fluoride fiber. The first laser emission in an InF3 fiber is also demonstrated from the 3 μm dysprosium transition. Finally, a frequency domain excited state lifetime measurement comparison between fluoride hosts suggests that multiphonon effects are significantly reduced in indium fluoride fiber, paving the way to more efficient, longer wavelength lasers compared to ZBLAN fibers.

Original languageEnglish
Pages (from-to)1926-1929
Number of pages4
JournalOptics Letters
Volume43
Issue number8
DOIs
Publication statusPublished - 15 Apr 2018

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