Polarization rotation under two-photon Raman resonance for magnetometry

Journal Article · Mon Apr 23 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4705424· OSTI ID:22025531

Pradhan, S; Behera, R; Das, A K ^[1]

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1. Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 85 (India)

The polarization rotation and coherent population trapping signal arising due to two photon process using linearly polarized light are found to be significantly enhanced for a Zeeman degenerate system. The zero crossing of the dispersive profile is found to be shifting proportional to the applied magnetic field, albeit the absorptive profile position remains invariant for a slightly imbalanced orthogonal circular polarization component. It provides an alternative method for precise measurement of vector magnetic field without requirement of a bias field. The use of polarization rotation signal for magnetic field measurement offers added advantage due to improved signal to noise ratio.

• OSTI ID: 22025531
• Journal Information: Applied Physics Letters, Vol. 100, Issue 17; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
MAGNETIC FIELDS
MAGNETOMETERS
MULTI-PHOTON PROCESSES
PHOTONS
POLARIZATION
RAMAN SPECTRA
RESONANCE
ROTATION
SIGNALS
SIGNAL-TO-NOISE RATIO
TRAPPING
VISIBLE RADIATION
ZEEMAN EFFECT