Research to measure atmospheric electric field environment by electrooptic effect and laser beam without disturbing environment

利用电光效应和激光束不干扰环境测量大气电场环境的研究

• 批准号: 10837017
• 负责人: SUMIYOSHITANI Satoru
• 金额: $ 2.18万
• 依托单位: Fukuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10837017/
• 关键词: Electric Field Measurement; Measurement with laser beam; Kerr Effect; Pockels Effect; CT法; CR法

The electric field measurement technique utilizing electrooptic effect was made the target of the research. This is known as one of the measurement techniques not to disturb the conditions of the measuring object. Regardless of the gas, liquid and solid, it can be applied widely if a measuring object was composed of the material which causes birefringence by the electric field and light can penetrate it. It is aiming at the establishment of the technique to measure the three-dimensional electric field distribution of some positions without introducing disorder. 1. A huge noise to the signal which contains electric field information isn't avoided with the electric field measurement technique utilizing electrooptic effect by nature. This problem was dissolved by amplifying a signal in the optical strength by using the deviation of the angle of the optical devices, the multiplexing of the measurement optical path using mirrors and the effect of their phase shifts. Then, measurement precision was increased, and then a measurement lower limit could be pulled down. 2. The cubic and globular-shaped optical crystals were made as big size〜50mm, and various verification of them were done to confirm the application of the Pockels crystal to measure an electric field. Specially, the knowledge about the optical activity was acquired. 3. Though inherently only two-dimensional electric field information is given with the electric field measurement technique utilizing electrooptic effect, getting the three-dimensional electric field information was made possible by using a CT technique. And though the improvement in the precision of the reconstruction needed the increase of the number in the observation direction so far, amendment algorithm was developed, then reconstruction precision could be improved greatly in spite of the reducing number in the observation direction.

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项目成果

Satoru Sumiyoshitani: "Fundamental Study on Pockels Electro-Optic Measurement Method for Non-Uniform Three-Dimensional Electric Field" Proc.of Korea-Japan Joint Symposium on ED and HVE. 95-98 (1998)

Satoru Sumiyoshitani：“非均匀三维电场普克尔光电测量方法的基础研究”韩日 ED 和 HVE 联合研讨会论文集。

Satoru Sumiyoshitani: "Improvement of Phase Shift Signal to Noise Ratio in Electro-Optic Field Measurement Methods"Int.Sympo.On High Voltage Engineering. S.B-14. 63-66 (1999)

Satoru Sumiyoshitani：“电光场测量方法中相移信噪比的改进”Int.Sympo.On 高电压工程。

Satoru Sumiyoshitani: "Study on Improving Signal to Noise Ratio in Electro-Optic Field Measurement Methods"Fukuoka University Review of Technological Science. No.63. 23-27 (1999)

Satoru Sumiyoshitani：“提高电光场测量方法中的信噪比的研究”福冈大学技术科学评论。

Satoru Sumiyoshitani: "Fundamental study on Pockels electro-optic measurement method for non-uniform three-dimensional electric field"Korea-Japan Joint Symp.on Electrical Discharge and High Voltage Engineering. S.3-7. 95-98 (1998)

住吉谷悟：“非均匀三维电场普克尔斯电光测量方法的基础研究”韩日放电及高电压工程联合研讨会。

住吉谷 覚: "電気光学効果を利用した電界計測のためのS/N比改善法の検討"福岡大学 工学集報. 第63号. 23-27 (1999)

Satoru Sumiyoshitani：“利用电光效应进行电场测量的信噪比改进方法的研究”福冈大学工学通报第63. 23-27号（1999）。