Integrated Polarization-Splitting Grating Coupler for Chip-Scale Atomic Magnetometer.

ABSTRACT: Atomic magnetometers (AMs) are widely acknowledged as one of the most sensitive kind of instruments for bio-magnetic field measurement. Recently, there has been growing interest in developing chip-scale AMs through nanophotonics and current CMOS-compatible nanofabrication technology, in pursuit of substantial reduction in volume and cost. In this study, an integrated polarization-splitting grating coupler is demonstrated to achieve both efficient coupling and polarization splitting at the D1 transition wavelength of rubidium (795 nm). With this device, linearly polarized probe light that experienced optical rotation due to magnetically induced circular birefringence (of alkali medium) can be coupled and split into individual output ports. This is especially advantageous for emerging chip-s

SUBMITTER: Hu J 

PROVIDER: S-EPMC9313279 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature