We report what is to our knowledge the first possibility of a NO<sub>2</sub> molecular magnetometer based on the Zeeman modulation magnetic rotation spectroscopic (ZM MRS) technique and the magneto-optic activity of NO<sub>2</sub>. The linear dependence of the ZM MRS signal intensity on the modulating magnetic field is theoretically analyzed and experimentally measured. The design concept of the magnetometer and its main features are discussed.
© 1998 Optical Society of America
(020.7490) Atomic and molecular physics : Zeeman effect
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(230.2240) Optical devices : Faraday effect
(300.0300) Spectroscopy : Spectroscopy
Xiaohua Yang, Yangqin Chen, Peipei Cai, Hui Wang, Jinhai Chen, and Changping Xia, "Application of Zeeman Modulation Faraday Spectroscopy to the Measurement of a Magnetic Field," Appl. Opt. 37, 4806-4809 (1998)