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LIGHT-TRANSMITTING POLYCRYSTALLINE MATERIAL AND PROCESS FOR PRODUCING SAME

Foreign code F120006962
File No. S2011-0438
Posted date Oct 26, 2012
Country WIPO
International application number 2012JP050023
International publication number WO 2012/111354
Date of international filing Jan 4, 2012
Date of international publication Aug 23, 2012
Priority data
  • P2011-028685 (Feb 14, 2011) JP
Title LIGHT-TRANSMITTING POLYCRYSTALLINE MATERIAL AND PROCESS FOR PRODUCING SAME
Abstract

A light-transmitting polycrystalline material having optical properties that continuously change in the material is produced. A slurry which contains single-crystal particles that receive force when placed in a magnetic field is sintered after being subjected to affixing in a magnetic field where the magnetic-flux density changes with respect to the space. For example, a slurry which contains single-crystal particles of YAG to which Er has been added and single-crystal particles of YAG to which no rare-earth elements have been added is subjected to affixing in a magnetic field where the magnetic-field intensity is unevenly distributed. As a result, the portion located in an intense magnetic field gives a laser oscillation region which is rich in the YAG containing Er and in which the crystals have been unidirectionally oriented, while the portion located in a weak magnetic field gives a region which is rich in the YAG containing no rare-earth elements and which transmits light. Thus, a polycrystalline material having both a core that undergoes a laser oscillation and a guide that is located on the periphery of the core and leads excitation light to the core can be produced at one time.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • INTER-UNIVERSITY RESEARCH INSTITUTE, NATIONAL INSTITUTES OF NATURAL SCIENCES,
  • TOYOTA JIDOSHA KABUSHIKI KAISHA,
  • GENESIS RESEARCH INSTITUTE, INCORPORATED,
  • TAIRA TAKUNORI,
  • AKIYAMA JUN,
  • ASAI SHIGEO
  • Inventor
  • TAIRA TAKUNORI,
  • AKIYAMA JUN,
  • ASAI SHIGEO
IPC(International Patent Classification)

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