Dark-state imaging for two-dimensional mapping of a magnetic field |
| |
Authors: | Asahi Hitoshi Motomura Koji Harada Ken-ichi Mitsunaga Masaharu |
| |
Institution: | Department of Physics, Faculty of Science, Kumamoto University, 2-39-1 Kurokami, Kumamoto-shi, Kumamoto 860-8555, Japan. |
| |
Abstract: | By imaging the dark states that are due to coherent population trapping in Na atomic vapor, we have succeeded in depicting a spatially inhomogeneous magnetic field. Highly resolved dark lines represent cross sections of the surfaces of constant magnetic fields, and they agree well with the predicted hyperfine Zeeman splitting and the two-photon selection rules of the Na atom. Mapping was made two dimensionally in real time, but extension to three dimensions is straightforward. Furthermore, unlike the previous techniques based on optical pumping, this method can be used for any magnetic-field directions. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|