Physikalische Chemie - Direktor: Prof. Dr. Martin Wolf
Host: T. Kumaga
Monday, January 29, 2018, 11:00 am
All are invited to meet around 10:40 am for a chat with coffee & cookies.
PC Seminar Room, G 2.06, Faradayweg 4
Dr. Tobias Kießling
Chair for Experimental Physics 3, Physikalisches Institut, Faculty of Physics and Astronomy, University of Würzburg
Optically detected spatially resolved vector magnetometry based on nitrogen-vacancy centers in diamond
We provide a comprehensive overview of the capabilities of optical magnetometry based on color centers embedded in a solid state environment. We review the principles of the optically detected magnetic resonance (ODMR) technique and discuss the application to the negatively charged nitrogen-vacancy (NV) center in diamond, which is our system of choice for device implementation. A comparison with other sensitive magnetometry technologies is given and it is demonstrated that NV centers in diamond allow for an unprecedented combination of spatial resolution and magnetic sensitivity in a wide range of temperatures. We show how this method can be used for measuring magnetic fields at the nanometer scale as well as for wide-field-of view magnetic field imaging. Finally, we demonstrate all-optical vector magnetometry in an ensemble of NV centers in diamond without static magnetic bias field.