公开(公告)号：US20250146870A1

公开(公告)日：2025-05-08

申请号：US18940403

申请日：2024-11-07

Applicant: Endress+Hauser Optical Analysis, Inc.

Inventor： Jürgen Dessecker ,  Patrick Ehlers ,  Marc Winter ,  Joseph B. Slater

IPC: G01J3/02 ,  G01J3/433

Abstract: A spectrometer including: a laser light source, including a tunable diode laser with a coherent laser output, wherein the laser light source is configured to modulate the frequency of the coherent laser output; a photodetector arranged to receive the coherent laser output; at least one optical element arranged between the laser output and the photodetector; and an evaluation unit electrically connected to the photodetector. The laser light source and/or the first optical element is mounted on a movable carrier, wherein the movement of the carrier is oscillatory and changes the path length of the radiation such that interference signals are suppressed, wherein the suppression occurs due to interference between the radiation emitted from the light source and the change in the path length of the beam path due to the movement on the movable carrier.