Cavity Atom Interferometer For Noise-Suppressed Inertial Sensing

Tech ID: 30047 / UC Case 2019-075-0

Patent Status

Patent Pending

Brief Description


The sensitivity of mobile atom interferometers for gravimetry, gradiometry and inertial sensing has been limited by a noise floor due to ground vibrations, as well as available free-fall space. 

 

UC Berkeley researchers have developed an interferometer geometry that addresses both problems within an optical cavity. The utility of such a device lies primarily in its application as a mobile sensor, particularly for situations in the absence of a GPS signal (such as in deep-sea submarines, or in the event of a GPS system failure).  Similarly, sensing using gravitational signals has wide applicability. The configuration of this device accumulates an acceleration phase sensitive to low-frequency accelerations (i.e., gravity) while demonstrating an immunity to accelerations at higher frequencies than the held times (i.e., vibrations).


Suggested uses


  • mobile sensor 
  • inertial navigation devices

 

Advantages


  • resolve phase-stable measurements with a greatly simplified vibration isolation system than is traditionally required for comparable inertial sensitivity
  • the effects of vibrations can be suppressed by a factor of about 100
  • the vertical free-fall distance required for a measurement of equivalent sensitivity is reduced by two to three orders of magnitude, from tens of centimeters to fractions of a millimeter

 

Learn About UC TechAlerts - Save Searches and receive new technology matches

Inventors

  • Mu¨ller, Holger

Other Information

Categorized As