Control of femtosecond laser pulses using a radial spatiotemporal lens and application to material processing
| Project/Area Number |
24656042
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Applied optics/Quantum optical engineering
|
|---|
| Research Institution | Utsunomiya University |
|---|
Principal Investigator |
HAYASAKI Yoshio 宇都宮大学, オプティクス教育研究センター, 教授 (10271537)
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | 時空間レンズ / 2光子顕微鏡 / フェムト秒レーザー / 計算機ホログラム / 空間光変調素子 / 回折光学素子 / 空間光変調 / 材料加工 / 計測工学 / ベッセルビーム / 材料加工・処理 / 情報フォトニクス |
|---|
| Outline of Final Research Achievements |
We firstly proposed a diffractive spatiotemporal lens with a rotationally-symmetrical structure and demonstrate the focusing characterizations evaluated by a numerical simulation. The diffractive optical element gives a good solution for making the complex and dynamic structures for controlling dispersion and wavefront compensations. The diffractive spatiotemporal lens has a concentric diffractive grating that disperses a broadband ultrashort pulse to the radial direction from z axis as a key optical parts. Therefore, it is called as a diffractive radial spatiotemporal lens. The most important feature of the DRSTL is a circularly symmetrical simultaneous spatial and temporal focusing. It has the controllability of the lateral peak intensity distribution by changing the spatial frequency of the concentric diffractive grating.
|
Report
(4 results)
Research Products
(66 results)
