公开(公告)号：US10809128B2

公开(公告)日：2020-10-20

申请号：US15941510

申请日：2018-03-30

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Nien-Hui Ge ,  Yuan Feng ,  Ilya Vinogradov

IPC: G01J3/45 ,  G01J3/02 ,  G01J9/04 ,  G01J3/433

Abstract: A heterodyne optical spectroscopy system comprises a light source that acts as a local oscillator (LO); a beam splitting component that generates a reference beam from the LO; a signal component that generates a sample signal from a sample; a beam blocker that can turn off the sample signal to generate blank shots; a composite signal detection subsystem that detects a heterodyned signal that is a mix of the sample signal and a portion of the LO; a composite reference detection subsystem synchronized to the signal detection subsystem to detect a portion of the reference beam; and a processor that processes digital signals from the signal detection subsystem and the reference detection subsystem. A very versatile reference scheme is developed to treat different heterodyne spectroscopies in a unified way, which achieves optimal noise suppression.

公开(公告)号：US20180283950A1

公开(公告)日：2018-10-04

申请号：US15941510

申请日：2018-03-30

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Nien-Hui Ge ,  Yuan Feng ,  Ilya Vinogradov

IPC: G01J3/45 ,  G01J3/02

CPC classification number: G01J3/45 ,  G01J3/027 ,  G01J3/433 ,  G01J9/04

Abstract: A heterodyne optical spectroscopy system comprises a light source that acts as a local oscillator (LO); a beam splitting component that generates a reference beam from the LO; a signal component that generates a sample signal from a sample; a beam blocker that can turn off the sample signal to generate blank shots; a composite signal detection subsystem that detects a heterodyned signal that is a mix of the sample signal and a portion of the LO; a composite reference detection subsystem synchronized to the signal detection subsystem to detect a portion of the reference beam; and a processor that processes digital signals from the signal detection subsystem and the reference detection subsystem. A very versatile reference scheme is developed to treat different heterodyne spectroscopies in a unified way, which achieves optimal noise suppression.