Characterization of Random Lasers with Fractal Structures
| Project/Area Number |
19560035
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Applied optics/Quantum optical engineering
|
|---|
| Research Institution | Kyushu Institute of Technology |
|---|
Principal Investigator |
OKAMOTO Takashi Kyushu Institute of Technology, 大学院・情報工学研究院, 教授 (40204036)
|
|---|
| Project Period (FY) |
2007 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| Keywords | ランダムレーザー / フラクタル / レーザースペックル / 光硬化性樹脂 / 時間領域差分法 / 多重散乱 / スペックル |
|---|
| Research Abstract |
Random lasers, which have properties of both a conventional laser and an illuminating light source, have not been in practical use because of their low emission efficiencies. We introduced a self-similar (fractal) structure for a random laser medium to improve the efficiency. The statistical properties of three-dimensional intensity distributions formed with fractal speckle patterns have been elucidated. An electromagnetic simulation has shown that the fractal structures are suitable for random lasing. Experiments using a photopolymer indicated that a random laser can be fabricated by illuminating a polymer medium with laser speckles.
|
Report
(4 results)
Research Products
(16 results)
