研究課題/領域番号 |
22KJ1365
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補助金の研究課題番号 |
22J12145 (2022)
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研究種目 |
特別研究員奨励費
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配分区分 | 基金 (2023) 補助金 (2022) |
応募区分 | 国内 |
審査区分 |
小区分30020:光工学および光量子科学関連
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研究機関 | 電気通信大学 |
研究代表者 |
LI RUNMIN 電気通信大学, 情報理工学研究科, 特別研究員(DC2)
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研究期間 (年度) |
2023-03-08 – 2024-03-31
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研究課題ステータス |
交付 (2023年度)
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配分額 *注記 |
1,700千円 (直接経費: 1,700千円)
2023年度: 800千円 (直接経費: 800千円)
2022年度: 900千円 (直接経費: 900千円)
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キーワード | EO comb / coherent synthesis / low noise / broadband |
研究開始時の研究の概要 |
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.
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研究実績の概要 |
A coherently synthesized two-color EO comb is constructed within this year. Two CW lasers with distinct center wavelengths are modulated by EO modulators, resulting in two EO combs. The coherent synthesis between the two EO combs leads to the generation of coherently synthesized two-color EO comb. This coherently synthesized two-color EO comb shows the advantageous of broadband spectrum and low phase noise.
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現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The research goes smoothly in the past year. The research result, which is the demonstration of coherently synthesized two-color EO comb, is the important basic of the following research. In the next year, a LIDAR system will construct based on the coherently synthesized two-color EO comb. This LIDAR system will show the advantageous of high update rate and high precision.
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今後の研究の推進方策 |
A LIDAR system with high update rate and high precision will be constructed in this year. The coherently synthesized two-color EO comb is utilized as the optical source of the LIDAR system. The performance of the LIDAR system will be systematically studied, including the long-term and short-term stability, the linearity and measurement errors. Some technologies and improvements will be implemented to improve the system performance. The non-ambiguity range of the system will be extended by combining several measurement methods. Finally, absolute distance measurement with nanometer precision in extended non-ambiguity range will be realized in this system.
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