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Fourier transform near-infrared spectrometer using a corner-cube integrated prism scanning interferometer
Takanori Kiyokura1, Takahiro Ito, Renshi Sawada
1NTT Microsystem Integration Laboratories, Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
Applied Spectroscopy
|December 21, 2004
Summary
This study presents a robust, portable Fourier transform (FT) near-infrared spectrometer. Its integrated prism scanning interferometer uses corner cubes for stable optical paths, enabling field use.
Area of Science:
- Spectroscopy
- Optical Engineering
- Analytical Chemistry
Background:
- Fourier transform (FT) spectrometers are crucial for near-infrared (NIR) analysis.
- Conventional FT spectrometers often face challenges with optical path stability and portability.
- Developing robust and field-deployable spectroscopic instruments is a significant need.
Purpose of the Study:
- To describe a novel Fourier transform near-infrared spectrometer design.
- To enhance the stability and portability of FT spectrometers for field applications.
- To adapt existing interferometer designs for improved performance.
Main Methods:
- Integration of a prism scanning interferometer.
- Stabilization of optical paths using corner cubes.
- Adaptation of retroreflection mirror principles into a special design for the integrated interferometer.
Main Results:
- Achieved highly stabilized optical paths within the interferometer.
- Reduced the required moving distance of the stage by half.
- Maintained spectroscopic properties without degradation.
- Demonstrated a robust and portable FT spectrometer.
Conclusions:
- The novel integrated prism scanning interferometer design offers significant advantages.
- The use of corner cubes effectively stabilizes optical paths.
- The developed spectrometer is suitable for reliable field use due to its portability and robustness.