| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| 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.
|
