DocumentCode :
807213
Title :
Silica-clad neodymium-doped lanthanum phosphate fibers and fiber lasers
Author :
Martin, R.A. ; Knight, J.C.
Author_Institution :
Dept. of Phys., Univ. of Bath
Volume :
18
Issue :
4
fYear :
2006
Firstpage :
574
Lastpage :
576
Abstract :
We have fabricated a neodymium-doped phosphate glass fiber with a silica cladding and used it to form a fiber laser. Phosphate and silicate glasses have considerably different glass transition temperatures and softening points making it hard to draw a fiber from these two glasses. A bulk phosphate glass of composition (Nd2O3)0.011(La2O3 )0.259(P2O5)0.725(Al 2O3)0.005 was prepared and the resultant material was transparent, free from bubbles and visibly homogeneous. The bulk phosphate glass was drawn to a fiber while being jacketed with silica and the resultant structure was of good optical quality, free from air bubbles and major defects. The attenuation at a wavelength of 1.06 mum was 0.05 dB/cm and the refractive index of the core and cladding at the pump wavelength of 488 nm was 1.56 and 1.46, respectively. The fibers were mechanically strong enough to allow for ease of handling and could be spliced to conventional silica fiber. The fibers were used to demonstrate lasing at the 4F3/2-4I11/2 (1.06 mum) transition. Our work demonstrates the potential to form silica clad optical fibers with phosphate cores doped with very high levels of rare-earth ions (27-mol % rare-earth oxide)
Keywords :
drawing (mechanical); fibre lasers; lanthanum compounds; laser transitions; neodymium; optical fibre cladding; optical fibre fabrication; optical glass; phosphate glasses; refractive index; splicing; 1.06 mum; Nd2O3La2O3P2 O5Al2O3; SiO2; fiber drawing; fiber laser; glass transition; lasing transition; neodymium-doped phosphate glass fiber; phosphate glass; refractive index; silica cladding; silicate glass; Fiber lasers; Glass; Lanthanum; Laser transitions; Neodymium; Optical attenuators; Optical fibers; Silicon compounds; Softening; Temperature; Fiber laser; neodymium; phosphate glass; soft glass;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2005.863999
Filename :
1583679
Link To Document :
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