公开(公告)号：US08873040B2

公开(公告)日：2014-10-28

申请号：US13743457

申请日：2013-01-17

Applicant: Mustard Tree Instruments, LLC

Inventor： Brian Garrett ,  Todd Blonshine ,  W. Stanley Ayers

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/28

CPC classification number: G01J3/44 ,  G01J3/0213 ,  G01J3/28

Abstract: A Raman spectrometer optically separates an optical signal scattered by a sample from an incident excitation light beam into an unshifted return component at a first wavelength and one or more Raman scattered components at shifted wavelengths characteristic of the sample. The unshifted return component—but not the Raman scattered components—is attenuated prior to impinging on an optical detector. The unshifted return then serves as the basis for real-time calibration to account for fluctuations in optical intensity, wavelength shift, and/or spectral peak width, based on a comparison of the unshifted return peak to a reference standard for stable reflectance.

Abstract translation: 拉曼光谱仪将由样品散射的光信号与入射的激发光束光学分离成第一波长的未移位的返回分量和在样品特性移动波长处的一个或多个拉曼散射分量。 未移动的返回分量 - 而不是拉曼散射分量 - 在撞击光学检测器之前被衰减。 基于未固定的返回峰与稳定反射率的参考标准的比较，该无移位的返回值用作实时校准的基础，以考虑光强度，波长漂移和/或光谱峰值宽度的波动。