Portable raman spectrometer

Abstract

Embodiments of the invention provide a portable raman spectrometer. The portable raman spectrometer comprises a laser, a spectrograph, a probe and an optical-fiber system, wherein the laser is used for emitting exciting light; the spectrograph is used for receiving raman scattered light and converting a light signal to an electric signal after the light is split; the probe is used for illuminating the exciting light to a sample and collecting raman scattered light on the sample; and the optical-fiber system is connected between the laser and the probe and between the probe and the spectrograph so as to facilitate the light transmission. By adopting the portable raman spectrometer provided by the invention, the optical system of a conventional raman spectrometer is simplified, parts of the raman spectrometer are more flexible to arrange, the overall size is reduced, and the downsizing requirement and the real-time and rapid measurement requirement can be met.

Description

technical field [0001] The invention relates to the field of Raman spectrum detection, in particular to an improved portable Raman spectrometer. Background technique [0002] Raman spectroscopy is a kind of molecular vibration spectrum, which can reflect the fingerprint characteristics of molecules and can be used for the detection of substances. The Raman spectrometer detects and identifies substances by detecting the Raman spectrum generated by the Raman scattering effect of the analyte on the excitation light. Raman spectroscopy has been widely used in liquid security inspection, jewelry detection, explosives detection, drug detection, drug detection and other fields. [0003] The existing Raman spectrometer mainly includes three parts: laser, external optical path system, and spectrometer. The excitation light emitted by the laser is irradiated to the tested sample through the external optical path, and Raman scattered light is generated on the tested sample. The Raman ...

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Problems solved by technology

[0004] The existing Raman spectrometer has such inconveniences: between the laser and the external optical path system, and between the external optical path system and the spectrometer, traditional optical path elements are used to realize the transmission of light beams, and the optical path elements are affected by many aspects such as position and size. As a result, the overall size of the existing Raman spectroscopy device is large, and its detection method and instrument installation are not suitable for on-site use, and it is difficult to meet the needs of the industry for portable inspection

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