DEVICE FOR GENERATING LASER WITH ULTRA-NARROW-LINEWIDTH
Number of patents in Portfolio can not be more than 2000
United States of America
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N/A
Issued Date -
Jan 9, 2025
app pub date -
Jul 4, 2024
filing date -
Jul 4, 2024
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A device for generating laser with ultra-narrow-linewidth includes an optical self-injection locking loop and an ultra-stable cavity phase-locked loop. The optical self-injection locking loop improves the quality factor of the laser resonator to narrow the linewidth. The ultra-stable cavity phase-locked loop locks the phase of the optical signal in the optical self-injection, synchronizing the laser frequency with the optical resonator. Through feedback control of the laser's driving current, it further reduces the laser's frequency noise and enhances the linewidth narrowing rate. Additionally, the ultra-stable cavity phase-locked loop provides stable control of the laser frequency, preventing mode hopping caused by laser frequency drift, thereby improving system stability. Therefore, this device can provide a stable narrow-linewidth laser source for applications in fiber optic communication, lidar, industrial device processing, and medical fields.
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