Spectroscopic analyzer

The spectroscopic analysis device employs a Fabry-Perot-type quantum cascade laser to achieve high wavelength accuracy and resolution at a lower cost, addressing the limitations of conventional methods by providing sufficient light intensity and eliminating the need for expensive technologies.

JP2025048572APending Publication Date: 2025-04-03HAMAMATSU PHOTONICS KK
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Patent Information

Application Number
JP2023157454
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-22
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Conventional spectroscopic analysis methods using dispersion elements and lamp light sources require expensive technologies for high wavelength accuracy and resolution, and suffer from weak measurement light due to the wide emission wavelengths and low light intensity of lamp sources.

Method used

A spectroscopic analysis device utilizing a Fabry-Perot-type quantum cascade laser as a light source, which emits multiple mode lights with discrete oscillation spectra, allowing for high wavelength resolution and accuracy defined by mode intervals, and providing sufficient light intensity for detection without the need for highly sensitive photodetectors.

Benefits of technology

The device achieves high wavelength accuracy and resolution at a lower cost compared to conventional methods, with the ability to detect weak measurement light effectively and maintain reproducibility without the need for expensive technologies.

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Abstract

To provide a spectroscopic analyzer capable of realizing a configuration having high wavelength accuracy and wavelength resolution at low cost.SOLUTION: A spectroscopic analyzer 1A includes: a Fabry-Perot QCL element 2 configured to emit a laser light beam L including a plurality of mode light beams M respectively corresponding to a plurality of modes indicating a discrete oscillation spectrum; a diffraction grating 4 configured to disperse the laser light beam L emitted from the QCL element 2 into the plurality of mode light beams M; and a light detector 8 configured to detect the mode light beams M dispersed by the diffraction grating 4 and then transmitted through a sample S.SELECTED DRAWING: Figure 1
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