18764294. DEVICE FOR GENERATING LASER WITH ULTRA-NARROW-LINEWIDTH (ZHEJIANG UNIVERSITY)
Contents
DEVICE FOR GENERATING LASER WITH ULTRA-NARROW-LINEWIDTH
Organization Name
Inventor(s)
Xiangdong Jin of Hangzhou (CN)
DEVICE FOR GENERATING LASER WITH ULTRA-NARROW-LINEWIDTH
This abstract first appeared for US patent application 18764294 titled 'DEVICE FOR GENERATING LASER WITH ULTRA-NARROW-LINEWIDTH
Original Abstract Submitted
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.
