A multi-pass cell enclosed by rare-earth magnets has been developed for sensitive FRS spectroscopy of oxygen. The FRS signals are generated by laser wavelength modulation and detected using a balanced photodetector and lock-in amplifier.
© 2012 OSA
B. E. Brumfield and G. Wysocki, "Faraday Rotation Spectroscopy of Oxygen Using a Cylindrical Mirror Multi-Pass Cell and Rare-Earth Magnets," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (online) (Optical Society of America, 2012), paper CW3B.3.
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