| Project/Area Number |
22KJ1365
|
|---|
| Project/Area Number (Other) |
22J12145 (2022)
|
|---|
| Research Category |
Grant-in-Aid for JSPS Fellows
|
| Allocation Type | Multi-year Fund (2023)
Single-year Grants (2022) |
|---|
| Section | 国内 |
|---|
| Review Section |
Basic Section 30020:Optical engineering and photon science-related
|
|---|
| Research Institution | The University of Electro-Communications |
|---|
Principal Investigator |
LI RUNMIN 電気通信大学, 情報理工学研究科, 特別研究員(DC2)
|
|---|
| Project Period (FY) |
2023-03-08 – 2024-03-31
|
| Project Status |
Completed (Fiscal Year 2023)
|
| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2023: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2022: ¥900,000 (Direct Cost: ¥900,000)
|
|---|
| Keywords | EO comb / distance measurement / synthetic wavelength / coherent synthesis / low noise / broadband |
|---|
| Outline of Research at the Start |
A fast and precise LIDAR system with real-time air refractive index self-correction is demonstrated. This LIDAR system is based on a novel coherently synthesized dual-color EO comb. This LIDAR system is able to achieve sub-micrometer precision with > 100 kHz update rate. The proposed LIDAR system is capable to realize dead-zone free measurement at a distance >2 m up to very long distance owing to the high and tunable repetition rate of EO comb. Real time air refractive index self-correction method is applied to the LIDAR system.
|
| Outline of Annual Research Achievements |
This year, the developed coherently synthesized two-color EO comb was applied to absolute distance measurement. A synthetic wavelength of 120 micrometer is constructed by the two center wavelengths of the two-color EO comb. Through combining synthetic wavelength interferometry, single wavelength interferometry and microwave phase detection, absolute distance measurement with nm resolution is achieved. The non-ambiguity range is 3mm. The update rate is 1000 Hz. In conclusion, I could achieve my research objective to develop high-accuracy and high-speed distance measurement technique using the novel two-color EO comb.
|
