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Apparatus and method for measuring spectral components of Raman scattered light

A Raman scattering and spectral component technology, applied in the field of spectral components of Raman scattered light, can solve the problems that are not suitable for obtaining wavelength resolution, spectral range and high throughput, inaccurate measurement of spectral components, and not suitable for detection, etc. problems, resulting in improved spectral range and throughput, minimization of stray light, and improved temporal resolution

Pending Publication Date: 2022-07-15
TIMEGATE INSTR OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is because in this spectrometer, the different wavelengths cannot be focused exactly to the same point
Third, existing SLM-based spectrometers with two spectrometers typically have a single channel for light propagation and are not well suited to obtain the optimal combination of wavelength resolution, spectral range, and large throughput
Furthermore, such spectrometers are also inefficient in reducing stray light and maximizing the dynamic range of individual pulses (i.e., maximum SPAD counts per individual laser pulse)
Furthermore, existing techniques and equipment for Raman spectroscopy are poorly suited to detect the weak Raman signal combined with strong and short-lived photoluminescence
This leads to inaccuracies in measuring the spectral components of such Raman signals

Method used

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  • Apparatus and method for measuring spectral components of Raman scattered light
  • Apparatus and method for measuring spectral components of Raman scattered light
  • Apparatus and method for measuring spectral components of Raman scattered light

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Embodiment Construction

[0052] The following detailed description illustrates embodiments of the present disclosure and the manner in which they may be implemented. While a few ways of implementing the present disclosure have been disclosed, those skilled in the art will recognize that other embodiments for implementing or practicing the present disclosure are possible.

[0053] In one aspect, embodiments of the present disclosure provide an apparatus for measuring spectral components of Raman scattered light emitted by a target, the apparatus comprising:

[0054] - a pulsed laser light source for emitting a laser beam;

[0055] - Detection optics, including:

[0056] - excitation optics for directing the laser beam to the target; and

[0057] - Collection optics for collecting the beam scattered and emitted by the target;

[0058] - Spectrometer, including:

[0059] - an input splitter for splitting the collected beam received from the collecting optics into at least a first beam and a second be...

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Abstract

An apparatus for measuring a spectral component of Raman scattered light emitted by a target is disclosed. The device comprises: a pulse laser light source for emitting light; the detection optical device is used for guiding the light to a target and collecting the light scattered by the target; a spectrometer comprising: an input splitter for splitting the collected light into a first light beam and a second light beam; a first spectrometer comprising an input aperture for receiving the light beam and a light disperser for dispersing the light beam; a second spectrometer including an input aperture and an output aperture; and a spatial light modulator for receiving the dispersed first and second light beams and selectively providing at least a portion of at least one of the dispersed first and second light beams to an input aperture of a second spectrometer, the second spectrometer reversing the dispersion of the light beams and focusing the light beams to an output aperture; a detector element is used to measure a spectral component of the light beam exiting the output aperture. The spectrometer also includes a delay line for delaying the light beam.

Description

technical field [0001] The present disclosure relates to apparatus for measuring spectral components of Raman scattered light emitted by a target. Furthermore, the present disclosure relates to methods for measuring spectral components of Raman scattered light emitted by a target. Background technique [0002] Raman spectroscopy has gained popularity over the past few decades as a widely used spectroscopic method to characterize and identify target materials, or to distinguish target materials from other materials. Raman spectroscopy is widely used in various fields such as art and archaeology, chemistry (organic and inorganic materials), geology, life sciences, pharmaceuticals, semiconductors, etc. Typically, Raman spectroscopy is based on the interaction of light with chemical bonds within the target material. From the interactions, Raman spectra are generated, which provide a unique chemical fingerprint (including information about chemical structure, phase, polymorphis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01J3/44
CPCG01N21/65G01J3/44G01J3/0229G01J2003/1278G01J3/0294G01J3/2803G01J3/0218G01N2201/08G02B6/4202G02B27/141
Inventor 劳里·库尔基伊尔卡·阿拉萨雷拉
Owner TIMEGATE INSTR OY
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