| Автор | Wei-Tou Ni |
| Автор | Der-Kuang Liu |
| Автор | Tai-Tung Liu |
| Автор | Hsien-Hao Mei |
| Автор | Sheau-shi Pan |
| Автор | Chin-Poh Pang |
| Автор | Hsien-Chi Yeh |
| Дата выпуска | 1999-06-01 |
| dc.description | Our goal is to measure the gravitational constant G to within 1-10 ppm using a high-finesse Fabry-Pérot optical cavity. The two high-reflectivity mirrors of the Fabry-Pérot cavity will be suspended separately by two nearly identical simple pendulums of length about 1 m. For the source of attraction, we have built a rotating mass source with 12 lead bricks (each brick is of mass 11.5 kg) on each of two opposite sides of a rotating table. The period of rotation can be adjusted. We normally use a rotation period of 200 s. For this rotating mass, the relative equilibrium displacement of the two mirrors is over 10 nm and we are working for a preliminary measurement of this distance to one part in 10<sup>4</sup>. Auxiliary quantities such as the positions of the test mass and the positions of Fabry-Pérot cavity mirrors can be monitored using real-time laser metrology. The stability and real-time monitoring of the pendulums, building stability, and the compensation or averaging of mass inhomogeneity need special considerations. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The application of laser metrology and resonant optical cavity techniques to the measurement of G |
| Тип | paper |
| DOI | 10.1088/0957-0233/10/6/314 |
| Electronic ISSN | 1361-6501 |
| Print ISSN | 0957-0233 |
| Журнал | Measurement Science and Technology |
| Том | 10 |
| Первая страница | 495 |
| Последняя страница | 498 |
| Выпуск | 6 |
