Open AccessSingle‐mode visible laser oscillation in Pr‐doped double‐clad structured waterproof fluoro‐aluminate glass fibre
Author(s) -
Kajikawa S.,
Terao T.,
Yoshida M.,
Motokoshi S.,
Ishii O.,
Yamazaki M.,
Fujimoto Y.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.0125
Subject(s) - materials science , doping , aluminate , oscillation (cell signaling) , slope efficiency , core (optical fiber) , laser , optics , fiber laser , glass fiber , fluoride , beam (structure) , aperture (computer memory) , optoelectronics , composite material , wavelength , chemistry , physics , cement , inorganic chemistry , biology , acoustics , genetics
A Pr‐doped double‐clad structured waterproof fluoride glass fibre (Pr:DC‐WPFGF) was successfully drawn, and the laser oscillation was demonstrated. The maximum output power was measured as 251.7 mW at 639.0 nm. The Pr:DC‐WPFGF was designed to be single‐mode fibre, with 0.08 of numerical aperture and 5.2 µm of core diameter. The beam‐quality factor, M 2 , was measured and evaluated to be 1.0.