Title :
Faraday rotation effects of Mn2+-modified Tb2O3-B2O3 glass in pulsed magnetic field
Author :
Imaizumi, Dai ; Hayakawa, Tomokatsu ; Nogami, Masayuki
Author_Institution :
Dept. of Mater. Sci. & Eng., Nagoya Inst. of Technol., Japan
fDate :
4/1/2002 12:00:00 AM
Abstract :
We present the dynamical Faraday rotation of a terbium metaborate glass (25Tb2O3-75B2O3) modified with Mn2+ ions using pulsed magnetic fields, which reached up to ~16 T. The superexchange couplings of Tb3+-O 2--Tb3+ or Tb3+-O2--Mn2+ were magnetooptically observed at lower temperature. In particular, the enhancement of the Faraday rotation effect was obtained at 15 K with repetitional operation of the 16-T pulsed magnetic fields, resulting in the destruction of the dimer couplings. When the operated glasses were heated back to 300 K, only the Tb2O3-B2O3:Mn2+ exhibited a significant change in the Faraday rotation
Keywords :
Faraday effect; borate glasses; manganese; optical glass; superexchange interactions; terbium compounds; 15 K; 16 T; 300 K; Faraday rotation effects; Mn2+ ions; Mn2+-modified Tb2O3-B2O3 glass; Tb2O3-B2O3:Mn2+ ; dimer coupling destruction; dynamical Faraday rotation; magnetic orderings; magnetooptical observation; pulsed magnetic field; repetitional operation; superexchange couplings; terbium metaborate glass; Couplings; Glass; Magnetic fields; Magnetic materials; Magnetic moments; Magnetic resonance; Optical attenuators; Optical fiber networks; Paramagnetic materials; Temperature;
Journal_Title :
Lightwave Technology, Journal of
