| Abstract: A sensor device is described herein, wherein the sensor device includes
an optical measurement system, such as an interferometer. The sensor
device further includes a low-power light source that is configured to
emit an optical signal having a constant wavelength, wherein accuracy of
a measurement output by the sensor device is dependent upon the optical
signal having the constant wavelength. At least a portion of the optical
signal is directed to a vapor cell, the vapor cell including an atomic
species that absorbs light having the constant wavelength. A
photodetector captures light that exits the vapor cell, and generates an
electrical signal that is indicative of intensity of the light that exits
the vapor cell. A control circuit controls operation of the light source
based upon the electrical signal, such that the light source emits the
optical signal with the constant wavelength. |
| Filed: 9/19/2013 |
| Application Number: 14/31863 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Attribution for Derwent World Patents Index Records published on Sandia ® Clarivate. All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |