Unbiased Electro-Optic Waveguide as a Sensitive Nuclear Magnetic Resonance Sensor

作者：Ayde Reina^*; Gaborit Gwenael; Dahdah Jean; Duvillaret Lionel; Courjal Nadege; Guyot Clement; Sablong Raphael; Perrier Anne Laure; Beuf Olivier

来源：IEEE Photonics Technology Letters, 2014, 26(12): 1266-1269.

DOI：10.1109/LPT.2014.2321099

• Electro-optical devices
• optical sensors
• magnetic field measurement
• nuclear magnetic resonance
• magnetic resonance imaging

A pigtailed Ti:LiNbO3 waveguide is here associated to a specific nuclear magnetic resonant coil to perform a low invasive magnetic field measurement. The developed device exploits a passive electro-optic transduction between the measured magnetic field and polarization state modulation of a laser probe beam. Because of the use of integrated optics, the coil electromotive force induces a dramatically enhanced electric field, thus leading to sensitivity improvement. A minimum detectable magnetic field lower than 60 fT . Hz(-1/2) is achieved at the resonant frequency of 128 MHz. A dynamic range exceeding 100 dB is experimentally demonstrated.

• 出版日期2014-6-15