



01662nas a2200217   4500008004100000245004200041210004000083260001500123300001200138490000600150520105500156100002101211700002201232700002101254700002201275700002301297700001601320700001901336700001601355856007301371       2018                        eng d00aElectro-mechano-optical NMR detection0 aElectromechanooptical NMR detection  c2018/02/01  a152-1580 v53 a<p><span style="font-family: &quot;Lucida Grande&quot;, helvetica, arial, verdana, sans-serif; font-size: 14.4px;">Signal reception of nuclear magnetic resonance (NMR) usually relies on electrical amplification of the electromotive force caused by nuclear induction. Here, we report up-conversion of a radio-frequency NMR signal to an optical regime using a high-stress silicon nitride membrane that interfaces the electrical detection circuit and an optical cavity through the electro-mechanical and the opto-mechanical couplings. This enables optical NMR detection without sacrificing the versatility of the traditional nuclear induction approach. While the signal-to-noise ratio is currently limited by the Brownian motion of the membrane as well as additional technical noise, we find it can exceed that of the conventional electrical schemes by increasing the electro-mechanical coupling strength. The electro-mechano-optical NMR detection presented here can even be combined with the laser cooling technique applied to nuclear spins.</span></p>1 aTakeda, Kazuyuki1 aNagasaka, Kentaro1 aNoguchi, Atsushi1 aYamazaki, Rekishu1 aNakamura, Yasunobu1 aIwase, Eiji1 aTaylor, J., M.1 aUsami, Koji  uhttps://www.osapublishing.org/optica/abstract.cfm?uri=optica-5-2-152