Abstract: The present disclosure provides a magnetometer for measuring a magnetic field B in the vicinity thereof. The magnetometer includes a vapor cell comprising atomic vapor; an optical processor for receiving a light beam and directing said light beam, as a probe light beam, to enter the vapor cell with a certain predetermined intensity I1 and a certain predetermined polarization state P1 to serve for interacting with at least one type of Alkali-like atoms in the atomic vapor of the vapor cell, for probing a Larmor frequency of precession thereof; and a detector for detecting the light beam after interaction with the atomic vapor to generate signals/data indicative of said Larmor frequency. The optical processor includes an optical depolarizer and a polarizer arranged respectively successively (e.g., not necessarily consecutively) with respect to a propagation direction of said light beam, along a propagation path of the light beam through the optical processor.

Abstract: An apparatus for the measurement of optical sensor performance includes a light emitter, a focuser and a controller. The optical sensor comprises a plurality of pixels, which may be arranged as a pixel array. The light emitter projects a light spot onto the sensor. The focuser focuses the light spot onto a specified portion of the sensor in accordance with a control signal. The controller analyzes an output signal of the optical sensor, and generates the control signal to an accuracy substantially confining the light spot to a single pixel in accordance with the analysis.