US 12,188,998 B2
Integrated photonics magnetometer based on a nonlinear diamond-containing resonator
Matthew Wade Puckett, Phoenix, AZ (US); Neal Eldrich Solmeyer, Edina, MN (US); Mary Salit, Plymouth, MN (US); Jianfeng Wu, Tucson, AZ (US); and Matthew Robbins, Minneapolis, MN (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Nov. 8, 2022, as Appl. No. 18/053,535.
Prior Publication US 2024/0345185 A1, Oct. 17, 2024
Int. Cl. G01R 33/32 (2006.01); G01R 33/032 (2006.01); G02F 1/39 (2006.01); H01S 3/091 (2006.01); H01S 3/108 (2006.01)
CPC G01R 33/032 (2013.01) [G02F 1/395 (2013.01); H01S 3/0912 (2013.01); H01S 3/1083 (2013.01); H01S 3/1086 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a substrate;
at least one optical pathway disposed on the substrate and configured to receive light having a first frequency;
a first optical resonator having nonlinear photon generation properties coupled to the at least one optical pathway, wherein the first optical resonator is configured to increase an intensity of the light having the first frequency, wherein when the intensity of the light having the first frequency exceeds a first threshold power level, the first optical resonator undergoes a nonlinear photon generation process to generate photons at a second frequency different from the first frequency, wherein the at least one optical pathway is configured to couple the light having the second frequency out of the first optical resonator at an output power level and to couple the light having the second frequency out of the substrate; and
an absorbent material disposed in the first optical resonator, wherein the absorbent material is configured, in response to being excited by light having a third frequency that corresponds to an excitation frequency of the absorbent material, to absorb the light having the first frequency, wherein the absorbent material has a nonlinear optical susceptibility such that, by absorbing the light having the first frequency, the absorbent material is configured to adjust a threshold power level needed for the first optical resonator to undergo the nonlinear photon generation process from the first threshold power level to a second threshold power level higher than the first threshold power level,
wherein when the intensity of the light having the first frequency is below the second threshold power level, the first optical resonator is not able to generate light having the second frequency,
wherein the output power level of the light having the second frequency that is coupled out of the first optical resonator decreases in response to the intensity of the light having the first frequency being below the second threshold power level.