Title :
Crystal growth of Cr,Ca(Mg):Y/sub 3/Al/sub 5/O/sub 12/ with high Cr/sup 4+/-doping concentration
Author :
Peizhen Deng ; Jun Xu ; Heyu Zhong ; Jingwen Qiao ; Fuxi Gan
Author_Institution :
Inst. of Opt. & Fine Mech., Acad. Sinica, Shanghai, China
Abstract :
Summary form only given. When chromium is doped into Y/sub 3/AlO/sub 12/ (YAG), it substitutes for aluminium and normally occupies octahedral sites as Cr/sup 3+/. However, the active center giving 1.35-1.6-/spl mu/m emission is Cr. Therefore, obtaining high concentrations of Cr and to therefore improve the NIR absorption, Cr/sup 4+/+ is the key to grow Cr-doped YAG crystals. Cr:YAG, Cr,Mg:YAG and Cr,Ca:YAG crystals were grown by the CZ method with various Cr and Ca concentrations.
Keywords :
crystal growth from melt; fluorescence; garnets; infrared spectra; optical materials; yttrium compounds; /spl mu/m emission; 1.35 to 1.6 mum; CZ method; Cr/sup 3+/; NIR absorption; Y/sub 3/AlO/sub 12/; YAG crystal growth; YAG:Cr; YAl5O12:Cr; crystal growth; high Cr/sup 4+/-doping concentration; high concentrations; octahedral sites; Absorption; Annealing; Chromium; Crystals; Electrons; Fluorescence; Optimized production technology; Solid lasers; Stability; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-443-2
