NIR spectroscopy
Why Ibsen Photonics for NIR spectroscopy
Near-infrared (NIR) spectroscopy is a powerful molecular analysis technique that probes vibrational overtones and combination bands of chemical bonds, particularly C–H, N–H, and O–H groups. Operating in the wavelength range of approximately 780 nm to 2500 nm, NIR spectroscopy is well suited for analyzing organic compounds, moisture content, and complex mixtures in both solid and liquid samples. By capturing full absorbance spectra rather than relying on single-wavelength measurements, NIR enables robust multivariate analysis of overlapping spectral features – ideal for applications in pharmaceuticals, agriculture, food processing, and industrial process control.
Ibsen Photonics offers transmission gratings and OEM spectrometers optimized for the NIR range, delivering low stray light, high signal-to-noise ratio, and thermal stability in compact, cost-effective designs. These spectrometers are engineered for high-volume production, ensuring consistent performance across units and seamless integration into demanding NIR spectroscopy systems.
Ibsen Photonics makes a difference in your NIR spectroscopy system:
Advantages of using Ibsen Photonics for NIR spectroscopy
Our transmission gratings are patterned and etched directly into fused silica in an ultra-clean environment, ensuring high precision and minimal defects. As a result, our gratings exhibit lower stray light than replicated gratings. Our spectrometers incorporate these in-house manufactured gratings along with assemblies specifically optimized for minimal stray light.
Thanks to the high grating dispersion (lines per mm) in our transmission gratings, we can design spectrometers that are significantly more compact than those based on competing technologies.
We offer a variety of detector options for our spectrometers, which, combined with our DISB low-noise electronics, ensure the highest possible signal-to-noise ratio in your instrument.
Spectrometers from Ibsen Photonics have no moving parts and are designed for low sensitivity to environmental influences, ensuring the long-term stability required for robust and accurate absorbance measurements.
Our experienced R&D teams have over 200 years of combined tenure and experience optimizing grating and spectrometer designs to achieve the best possible performance in cost and size-effective platforms.
These factors yield the following benefits:
Transmission gratings for NIR spectroscopy
At Ibsen Photonics, we design and manufacture the world’s best surface relief transmission gratings in fused silica for wavelengths between 175 nm and 2.5 μm. Diffraction efficiencies (DE) for a selection of our gratings in the NIR spectrum are shown in the figure and compared with less efficient technologies
Advantages of using Ibsen transmission gratings for your spectrometer:
Spectrometers for NIR spectroscopy
Our NIR spectrometers are optimized for different applications, from cost efficient, compact spectrometers for handheld devices to the highest performance spectrometers with low stray light and high signal-to-noise ratio.
For more information on our range of spectrometers for NIR absorption spectroscopy, please select your wavelength range of interest:
Wavelength ranges: NIR (900 – 2500 nm)
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