TY - JOUR
T1 - Sensitive optomechanical transduction of electric and magnetic signals to the optical domain
AU - Simonsen, Anders
AU - Saarinen, Sampo Antero
AU - Sanchez, Juan Diego
AU - Ardenkjaer-Larsen, Jan Henrik
AU - Schliesser, Albert
AU - Polzik, Eugene Simon
PY - 2019/6/24
Y1 - 2019/6/24
N2 - We report a radio-frequency-to-optical converter based on an electro-optomechanical transduction scheme where the electrical, optical, and mechanical interface was integrated on a chip and operated with a fiber-coupled optical setup. The device was designed for field tests in a magnetic resonance scanner where its small form-factor and simple operation is paramount. For the appurtenant magnetic resonance detection circuit at 32 MHz, we demonstrate transduction with an intrinsic magnetic field sensitivity of 8 fT/Hz, noise figure 2.3 dB, noise temperature 210 K, voltage noise 99 pV/Hz, and current noise 113 pA/Hz, all in a 3 dB-bandwidth of 12 kHz. Such sensitivity and bandwidth make the transducer a valuable alternative to conventional electronic preamplifiers that additionally is directly compatible with fiber communication networks.
AB - We report a radio-frequency-to-optical converter based on an electro-optomechanical transduction scheme where the electrical, optical, and mechanical interface was integrated on a chip and operated with a fiber-coupled optical setup. The device was designed for field tests in a magnetic resonance scanner where its small form-factor and simple operation is paramount. For the appurtenant magnetic resonance detection circuit at 32 MHz, we demonstrate transduction with an intrinsic magnetic field sensitivity of 8 fT/Hz, noise figure 2.3 dB, noise temperature 210 K, voltage noise 99 pV/Hz, and current noise 113 pA/Hz, all in a 3 dB-bandwidth of 12 kHz. Such sensitivity and bandwidth make the transducer a valuable alternative to conventional electronic preamplifiers that additionally is directly compatible with fiber communication networks.
U2 - 10.1364/oe.27.018561
DO - 10.1364/oe.27.018561
M3 - Journal article
C2 - 31252797
SN - 1094-4087
VL - 27
SP - 18561
EP - 18578
JO - Optics Express
JF - Optics Express
IS - 13
ER -