公开(公告)号：US20240369895A1

公开(公告)日：2024-11-07

申请号：US18653068

申请日：2024-05-02

Applicant: The Board of Trustees of the University of Illinois

Inventor： Lintao Li ,  Jacob Paul Covey ,  William Chiu Wong Huie ,  Jia Pern Neville Chen ,  Brian Leeds DeMarco

IPC: G02F1/21 ,  G02F1/11 ,  G02F1/35 ,  H01S5/00 ,  H01S5/14

Abstract: The present disclosure relates to active cancellation of frequency noise in lasers. One example embodiment includes a device. The device includes an optical cavity exhibiting a resonant optical frequency. The device also includes a laser. An output of the laser is locked to the resonant optical frequency. A first portion of the laser output is transmitted through the optical cavity to filter out high-frequency noise from the first portion of the laser output to generate a modified signal. Additionally, the device includes an acousto-optic modulator configured to generate a reference signal. Further, the device includes a feedforward circuit configured to receive a first portion of the reference signal and generate a feedforward signal. In addition, the device includes an electro-optic modulator configured to interfere a second portion of the reference signal with a second portion of the modified signal using the feedforward signal to generate an output signal.