We present a microwave B-field scanning imaging technique using diamond micro-crystal containing nitrogen vacancy center that is attached to a fiber tip. We propose a pulsed modulation technique, enabling the implementation of a variety of pulsed quantum algorithm for state manipulation and fast readout of spin state. A detailed mapping of the magnetic B-field distribution of a helical antenna with sub-100 micron resolution is presented and compared with numerical simulations. This fiber based microwave B-field probe has the advantage of minimized invasiveness, small overall size, will boost broad interest in a variety of applications where near field distribution is essential to device characterization, to name a few, antenna radiation profiling, monolithic microwave integrated circuits failure diagnosis, electromagnetic compatibility test of microwave integrated circuits and microwave cavity field mode mapping.
@article{arxiv.1809.04255,
title = {A fiber based diamond RF B-field sensor and characterization of a small helical antenna},
author = {M. M. Dong and Z. Z. Hu and Y. Liu and B. Yang and Y. J. Wang and G. X. Du},
journal= {arXiv preprint arXiv:1809.04255},
year = {2018}
}