Open AccessDirectly diode-pumped mid-infrared dysprosium fiber laser
Author(s) -
Matthew R. Majewski,
Md. Ziaul Amin,
Thibaud Berthelot,
Stuart D. Jackson
Publication year - 2019
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.44.005549
Subject(s) - zblan , materials science , photon upconversion , optics , laser , fiber laser , diode , optoelectronics , dysprosium , wavelength , laser pumping , doping , physics , nuclear physics
We report the demonstration of a Dy 3+ -doped ZBLAN fiber laser directly diode-pumped at 800 nm utilizing a codoping scheme with Tm 3+ serving as the donor ion. In this initial demonstration, a modest output power of 12 mW is generated with a slope efficiency of 0.3% at an emission wavelength of 3.23 μm. Energy transfer dynamics are investigated through excited state lifetime analysis and comparison to resonant pumping of the Dy 3+ upper state. The likely presence of an energy transfer upconversion process is identified, which has an undesirable effect on 3 μm class lasers but may be of significant benefit for future 4 μm systems.