Patent ID: 11940374
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method of detecting radio frequency (RF) signals, the method comprising:
generating a first laser light of a first wavelength with a first laser;
generating a second laser light of the first wavelength with a second laser;
providing frequency references for the first laser light and the second laser light with a probe light having a second wavelength;
selectively switching between passing the first laser light and the second laser light to an amplifier;
modulating the first laser light and second laser light to select frequencies before the first laser light and the second laser light are selectively passed to the amplifier;
amplifying the passed first laser light and second laser light with the amplifier;
doubling the frequency of the amplified first laser light and second laser light to generate pump light;
passing the pump light and the probe light through a vapor cell; and
measuring the probe light to determine if an RF signals is present.