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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 3 of 3 (0.022 seconds)| 1 |
Wide bandwidth instantaneous radio frequency spectrum analyzer based on nitrogen vacancy centers in diamondChipaux, M., Toraille, L., Larat, C., Morvan, L., Pezzagna, S., Meijer, Jan Berend, Debuisschert, T. 15 August 2018 (has links)
We propose an original analog method to perform instantaneous and quantitative spectral analysis
of microwave signals. An ensemble of nitrogen-vacancy (NV) centers held in a diamond plate is
pumped by a 532 nm laser. Its photoluminescence is imaged through an optical microscope and
monitored by a digital camera. An incoming microwave signal is converted into a microwave field
in the area of the NV centers by a loop shaped antenna. The resonances induced by the magnetic
component of that field are detected through a decrease of the NV centers photoluminescence. A
magnetic field gradient induces a Zeeman shift of the resonances and transforms the frequency information
into spatial information, which allows for the simultaneous analysis of the microwave
signal in the entire frequency bandwidth of the device. The time dependent spectral analysis of an
amplitude modulated microwave signal is demonstrated over a bandwidth of 600 MHz, associated
to a frequency resolution of 7MHz , and a refresh rate of 4 ms. With such integration time, a field
of a few hundreds of lW can be detected. Since the optical properties of NV centers can be
maintained even in high magnetic field, we estimate that an optimized device could allow
frequency analysis in a range of 30 GHz, only limited by the amplitude of the magnetic field
gradient. In addition, an increase of the NV centers quantity could lead both to an increase of the
microwave sensitivity and to a decrease of the minimum refresh rate down to a few ls.
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Nanoimplantation and Purcell enhancement of single nitrogen-vacancy centers in photonic crystal cavities in diamondRiedrich-Möller, Janine, Pezzagna, Sébastien, Meijer, Jan Berend, Pauly, Christoph, Mücklich, Frank, Markham, Matthew, Edmonds, Andrew M., Becher, Christoph 04 October 2018 (has links)
We present the controlled creation of single nitrogen-vacancy (NV) centers via ion implantation at
the center of a photonic crystal cavity which is fabricated in an ultrapure, single crystal diamond
membrane. High-resolution placement of NV centers is achieved using collimation of a
5 keV-nitrogen ion beam through a pierced tip of an atomic force microscope. We demonstrate
coupling of the implanted NV centers’ broad band fluorescence to a cavity mode and observe
Purcell enhancement of the spontaneous emission. The results are in good agreement with a master
equation model for the cavity coupling.
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Single Molecule Electron Paramagnetic Resonance and Other Sensing and Imaging Applications with Nitrogen-Vacancy NanodiamondTeeling-Smith, Richelle Marie 21 May 2015 (has links)
No description available.
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