Patent ID: 11914038
Assignee: AEVA, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. An electro-optical system for generating a linear phase chirp from a laser light source, comprising:
a laser light source arranged to receive a laser light drive and generate laser light; and
an optical interferometer arranged to receive a portion of the laser light and generate optical energy at a beat frequency proportional to laser light frequency rate of change;
a photodetector arranged to receive at least a portion of the optical energy at the beat frequency and generate a signal that indicates the beat frequency; and
a laser drive electronic circuit arranged to receive a reference frequency as input and the signal that indicates the beat frequency as closed loop feedback, compare the beat frequency with the reference frequency and generate the laser light drive so as to correct the laser light drive to keep the beat frequency locked to the reference frequency, wherein the laser drive electronic circuit comprises a transconductance stage.