Patent ID: 11933959
Assignee: THORLABS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. The imaging system of claim 1, wherein the light source comprises:
a pulse laser configured to generate light pulses; and
a synchronous electro-optic modulator (SEOM) with a delay loop;
wherein the SEOM comprises:
a quarter wave plate;
a first polarizing beam splitter or polarizer;
an electro-optic modulator (EOM);

circuitry configured to drive the SEOM with a drive waveform, the drive waveform being a phase-coherent sinusoidal waveform at a period equal to a time delay in the delay loop; and
a second polarizing beam splitter;
wherein the SEOM is arranged to direct the laser pulses from the laser source through the half wave plate, the first polarizing beam splitter, the EOM, and then to the second polarizing beam splitter;
wherein the second polarizing beam splitter is configured to split the light pulses from the EOM into an output pulse train having a first polarization state and a loop-back pulse train into the delay loop having a second polarization state.