Absorption spectroscopy

Why Ibsen Photonics for Absorption

Absorption spectroscopy is a molecular spectroscopy technique that detects and quantifies specific substances in a sample by analyzing how light is absorbed at different wavelengths. Common wavelength ranges are UV-VIS and near-infrared (NIR). Capturing full absorbance spectra rather than absorption at a single wavelength enables analysis of complex spectra with several overlapping peaks

Ibsen Photonics produces transmission gratings and spectrometers covering wavelengths from 175 nm to 2.5 μm, enabling low stray light, high signal-to-noise ratio and environmental stability in compact, cost effective designs.

Our spectrometers are designed for high-volume manufacturing, ensuring minimal unit-to-unit variation and excellent environmental stability. This makes them ideal for integration into high-performance absorption spectroscopy systems while maintaining a competitive cost.

Ibsen Photonics makes a difference in your absorption spectroscopy system:

World’s best grating efficiency
Low stray light
High signal-to-noise ratio (SNR)
Compact designs
Environmentally stable designs
Low unit-to-unit variation for easy OEM integration

Advantages of using Ibsen Photonics for absorption

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:

Full spectrum capture using pixel array sensors to provide full spectral information.
Low stray light provided by our transmission gratings with high precision and minimal defects combined with our stray light optimized spectrometers.
High signal-to-noise-ratio enabled by several detector options and low-noise electronics.
Compact size enabled by high grating dispersion..
Environmentally stable designs, that perform under any conditions.
Product lifetime 25 yrs+ with no movable parts and quality certified components and manufacturing processes
Spectrometer customization to match your exact requirements.
Worry-free volume scaling thanks to design for manufacture and low unit-to-unit variance.
Low unit-to-unit variation from our optimized manufacturing process and thorough testing of every produced unit.
Access to in-house experts who work with you to optimize your system performance.

Learn about our OEM solutions

Transmission gratings for absorption

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 UV-VIS-NIR spectrum are shown in the figure.

Advantages of using Ibsen transmission gratings for your spectrometer:

High diffraction efficiency over a broad wavelength range, enabling spectrometers with maximum sensitivity and signal-to-noise ratio (SNR).
High dispersion enabling compact spectrometer designs.
Fused silica grating with a small thermal expansion coefficient.
Works in transmission to provide improved thermal and vibrational stability.
Product reliability and longevity with no degradable materials, providing stable performance over the lifetime of your spectrometer.

Explore our transmission gratings

Spectrometers for absorption

Our UV-VIS-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 absorption spectroscopy, please select your wavelength range of interest:

Wavelength ranges: UV (175-435 nm) | UV-VIS (190-1100 nm) |
VIS (360-830 nm) | VIS-NIR (475-1100 nm) | NIR (900-2500 nm)

Explore our UV-VIS spectrometers

Explore our NIR spectrometers