Growth of single crystal fibers for 1.3 μm optical amplifiers by the laser-heated pedestal growth method

Li Hsing Wang, Min Hsiung Hon, Lynn Schneemeyer, G. A. Thomas, W. L. Wilson

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We describe the use of the laser-heated pedestal growth (LHPG) technique to prepare single-crystal fibers of potential solid-state laser and optical amplifier materials. Compared with other crystal growth approaches, including Czo-chralski and flux growth, the LHPG approach, which has very large thermal gradients at the growth interface, has fewer dislocations, resulting in crystals with improved optical quality. We discuss the use of the LHPG technique for the growth of spinel MgAl2O4:Ni2+ crystals. Such crystals are interesting as candidate materials for a 1.3 μm optical amplifier.

Original languageEnglish
Pages (from-to)1793-1799
Number of pages7
JournalMaterials Research Bulletin
Issue number12
StatePublished - 1 Jan 1998



  • B. crystal growth
  • D. luminescence

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