US 2022/0276293 A1 · WIDEBAND RF SPECTRUM REAL-TIME MONITOR

Abstract

A sensor system comprises a laser source that emits a pump beam at a first wavelength and a probe beam at a second wavelength, and an optical means for receiving the pump and probe beams. The optical means is operative to generate a plurality of light beams, each having a different frequency, from the pump and probe beams. One or more cells receive the light beams from the optical means and allow passage of the light beams therethrough, with the cells containing alkali atoms. A dichroic filter is configured to receive the light beams from the cells. The dichroic filter separates pump beam light and probe beam light from the light beams. A detector array receives the probe beam light from the dichroic filter. The detector array includes a two-dimensional array of photosensors that map out transmission of respective light beams corresponding to the probe beam light through the cells.

Claims20

Dependent claims

A sensor system, comprising:

a laser source configured to emit a pump beam at a first wavelength and a probe beam at a second wavelength;
optical means for receiving the pump beam and the probe beam from the laser source, the optical means operative to generate a plurality of light beams, each having a different frequency, from the pump beam and the probe beam;
one or more cells configured to receive one or more of the light beams from the optical means and to allow passage of the one or more light beams therethrough, the one or more cells containing a plurality of alkali atoms;
a dichroic filter configured to receive the one or more light beams from the one or more cells, the dichroic filter operative to separate pump beam light and probe beam light from the one or more light beams;
and
a detector array configured to receive the probe beam light from the dichroic filter, the detector array including a two-dimensional array of photosensors operative to map out transmission of respective light beams corresponding to the probe beam light through the one or more cells.

3 more elements

A sensor system, comprising:

a first laser device configured to emit a pump beam at a first wavelength;
a second laser device configured to emit a counter-propagating probe beam at a second wavelength;
a first photonic chip configured to receive the pump beam from the first laser device, the first photonic chip including an array of cascaded frequency shifters operative to generate a plurality of substantially parallel pump beams, each having a different frequency, from the pump beam;
a second photonic chip configured to receive the probe beam from the second laser device, the second photonic chip including an array of splitters operative to generate a plurality of substantially parallel probe beams from the probe beam;
a first optical device configured to receive the pump beams from the first photonic chip, wherein the first optical device is configured to broaden each of the pump beams into respective pump light sheets;
a second optical device configured to receive the probe beams from the second photonic chip, wherein the second optical device is configured to broaden each of the probe beams into respective probe light sheets;
a vapor cell configured to receive the pump light sheets from the first optical device and the probe light sheets from the second optical device, the vapor cell containing a plurality of alkali atoms;
one or more electric field plates coupled to the vapor cell and configured to produce an electric field gradient;
a dichroic mirror array configured to reflect the probe light sheets that pass through the vapor cell;
and
a detector array configured to receive the probe light sheets from the dichroic mirror array, the detector array including a two-dimensional array of photosensors operative to map out transmission of the probe light sheets along two axes from the vapor cell.

8 more elements

Dependencies are inferred from the claim text.

Wideband rf spectrum real-time monitor

Life of this patent

Wideband rf spectrum real-time monitor

Life of this patent

Abstract

Claims20