公开(公告)号：US20240085324A1

公开(公告)日：2024-03-14

申请号：US18462073

申请日：2023-09-06

Applicant: FemtoMetrix, Inc.

Inventor： Anatoly A. Shtykov ,  Michael Brandon Orozco

IPC: G01N21/63

CPC classification number: G01N21/636 ,  G01N2021/637 ,  G01N2201/067

Abstract: Methods are disclosed for improving one or more of jitter/timing, signal-to-noise ratio, signal integrity, stability, and repeatability of generation and measurement of Second Harmonic Generation (SHG) signals generated by a sample upon illumination by a light beam. The method may use precision hardware to control the generation of SHG signal and synchronize it with the optical detection process to improve the reliability and accuracy of measured SHG signals. A precise measurement of the initial SHG signal (Io) involves accurate temporal alignment between optical excitation and detection of the resulting SHG signal. Various disclosed systems and methods use high-speed Pockels Cell (PC) for controlling incident light, and precision electronics for synchronization.