Open AccessYb^3+ heavily doped photonic crystal fiber lasers prepared by the glass phase-separation technology
Author(s) -
Yingbo Chu,
Yang Yu,
Xiongwei Hu,
Chen Zhangru,
Yongzhong Ma,
Yongguang Liu,
Yibo Wang,
Lei Liao,
Yinbin Xing,
Haiqing Li,
Jinggagn Peng,
Nengli Dai,
Jinyan Li,
Lüyun Yang
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.024061
Subject(s) - materials science , borosilicate glass , photonic crystal fiber , slope efficiency , fiber laser , plastic clad silica fiber , hard clad silica optical fiber , rod , all silica fiber , laser , doping , optics , optical fiber , core (optical fiber) , homogeneity (statistics) , optoelectronics , fiber , dispersion shifted fiber , composite material , fiber optic sensor , medicine , alternative medicine , physics , statistics , pathology , mathematics
We report a Yb 3+ heavily doped photonic crystal fiber with 30 μm core diameter manufactured for the first time by an alternative technique. Silica core rods with a diameter of 3 mm and a length of 280 mm were prepared by the sodium-borosilicate glass phase-separation technology. The measurements show that the fiber has an Yb 3+ concentration of 22810 ppm by weight, and a resultant absorption of approximately 8.5 dB/m at 976 nm. The Yb 3+ ions are distributed throughout the fiber core with an excellent homogeneity. The laser performance demonstrates a high slope efficiency of 64.5% for laser emission at 1033.4 nm and a low power threshold of 3 W within a short fiber length of 1 m. This novel approach provides an alternative means of preparing large active silica rods with high doping levels and excellent material homogeneity for large mode area fibers with complex designs.