磁强计
灵敏度(控制系统)
激光器
动态范围
材料科学
梁(结构)
光学
带宽(计算)
物理
光电子学
磁场
电子工程
计算机网络
计算机科学
量子力学
工程类
作者
Bei Liu,Jing Peng,Haining Wang,Changfeng Fang,Jun-Lei Wang,Xian Zhao,Lu Deng
标识
DOI:10.35848/1882-0786/acaa1c
摘要
Abstract We demonstrate a dual-beam high-sensitivity room-temperature atomic magnetometer (AM) with a large dynamic range based on a nonlinear magneto-optical rotation (NMOR) enhancing scheme. Using an inelastic wave-mixing laser, we find significant NMOR signal enhancement compared with a single-beam scheme under the same far-detuned operation conditions. This dual-beam scheme is shown to operate well in the regime of lower laser intensity and off-resonance detuning. The best sensitivity achieved is 20 fT/Hz 1/2 with a bandwidth of 2 kHz, substantially greater than common spin-exchange relaxation-free AMs. This provides a way to develop low-power, inexpensive miniaturized AMs for wide application.
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