Development of efficient solar pumped laser media by controlling local phonon and crystal field in solid solution crystallized glasses

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05651
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic industrial materials
• Research Institution: Toyota Technological Institute
• Principal Investigator: Suzuki Takenbu 豊田工業大学, 工学(系)研究科(研究院), 准教授 (60367828)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 結晶化ガラス / 太陽光励起レーザ / 固溶体 / 共添加

Outline of Final Research Achievements

In this study, by controlling the local phonon and crystal field in the vicinity of chromium by transparent glass-ceramics in which solid solution nano-crystals are precipitated, simultaneous reduction of multiple phonon relaxation rate and energy levels is realized. By doing so, we aimed to dramatically increase the sensitizing effect of chromium and to create a solar pumped fiber laser medium with high efficiency. Although attempts were made on a number of glass compositions, it was not possible to obtain transparent glass-ceramics in which crystal phases incorporating both chromium and neodymium. Glass-ceramics in which chromium is in the crystalline phase though neodymium is in the glassy phase could be prepared. it has been revealed that energy transfer from chromium to neodymium occurs, although chromium and neodymium exist in different phases.

Free Research Field

光制御材料工学