PAT Archives - art photonics

In-line process monitoring instead of grab samples

A grab sample shows what was in the reactor when it was drawn. A fiber-optic probe shows what is in it now. Only the passive probe sits in the reactor, pipeline or vessel; the spectrometer stays outside, connected by fiber. Nothing has to be drawn, transported or prepared, so the data arrive while the process can still be adjusted.

Our FlexiSpec® probes are built for process conditions. ATR probes for harsh environments are rated up to +250 °C and 200 bar, and our Raman probes up to +200 °C (300 °C on request) and 100 bar. Both fit automated process interfaces.

One port, several techniques: ATR, Raman and combi probes

Multimodal spectroscopy measures the same sample with more than one technique, and each technique sees something different. Mid-IR ATR is most sensitive to polar bonds such as C=O, O–H and N–H. Raman picks up symmetric and non-polar bonds and works well in water. NIR quantifies moisture and solvent content.

Free process ports are scarce, so we combine techniques in a single probe shaft:

NIRaman Combi Probe: NIR diffuse reflectance and 785 nm Raman in one 19 mm shaft, for example in pharmaceutical process analytics, to follow residual moisture and polymorphic form during API crystallization and drying.
ATR-Raman-Transflection Probe: ATR, Raman and transflection channels in one probe.
Other combinations, such as mid-IR ATR with fluorescence, on request.

When the channels acquire simultaneously, as in the NIRaman probe, their spectra can be fused into one chemometric model. Our Technical Note 006 (PDF) compares mid-IR ATR and Raman for in-line use.

Fibers for every part of the spectrum

Each channel needs a fiber that carries its wavelength range. Silica fibers cover UV to NIR but stop transmitting at around 2.5 µm. For the mid-IR we use chalcogenide (CIR) fibers and our own polycrystalline silver-halide (PIR) fibers, which we extrude in Berlin. Together they cover 0.2–18 µm.

We have designed and built fibers, cables and probes in Berlin since September 1998: more than 25 years of German engineering, with ISO 9001-certified production.

Related products

Planning to move a lab method in-line? Send your process conditions (temperature, pressure, medium) and your spectrometer model to sales@artphotonics.com, and we will suggest a probe configuration. Standard probes are also available on loan for evaluation.

Thank you to CPACT for hosting the session. As members, we are glad to contribute to the webinar series.

Are you facing challenges in obtaining reliable chemical information during process monitoring? Our latest multi-modal fiber optic probe delivers data from ATR, Transflection, and Raman spectroscopy at the same measurement point**, giving you a fuller picture in real time.

During CSI XLIV in Ulm, art photonics will present this technology in detail. Dr. Viacheslav Artyushenko, Founder and Senior Adviser of art photonics, will explain how the probe’s three-in-one design improves in-line process control and supports advanced biomedical diagnostics.

Key information about the presentation:

Talk: “Multispectral fiber solutions for process control in-line and biomedical diagnostics”
Date: 30 July 2025
Time: 12:30 – 12:45 PM
Venue: CSI XLIV, Ulm, Germany

Join us to discuss the next steps in practical spectroscopy and see how this compact probe can simplify your analytical workflows. We look forward to meeting you in Ulm.

We are excited to unveil the latest innovation from our FlexiSpec® family—the NIRaman Fiber Probe. This advanced fiber probe seamlessly integrates Near-Infrared (NIR) and Raman spectroscopy into a single device, providing a comprehensive understanding of your samples in real-time.

Dual Spectroscopy Capabilities

Harness the power of both NIR and Raman techniques simultaneously without the need to switch probes. Our NIRaman Probe delivers simultaneous data acquisition, enhancing the efficiency and accuracy of your spectral analysis.

Highly Versatile Applications

Whether you're working with solids, powders, or liquids, the NIRaman Probe is designed to meet your needs across various industries, including:

Pharmaceuticals
Food Processing
Material Science

This versatility ensures that you can perform precise measurements directly where they are needed, streamlining your workflow and improving productivity.

Enhanced Insights

Gain a deeper understanding of the chemical composition and physical properties of your materials. The NIRaman Probe provides real-time data that helps you optimize quality control and enhance your production processes, leading to better product outcomes and increased operational efficiency.

Innovative Hybrid Modeling

By combining NIR and Raman data, the NIRaman Probe opens up new possibilities for accurate analysis and groundbreaking discoveries. This hybrid approach enables more detailed and reliable interpretation of your samples, facilitating advanced research and development.

User-Friendly Design

Designed to integrate seamlessly into your existing workflows, the NIRaman Probe is both user-friendly and precise. Its intuitive interface and robust performance ensure that you can achieve high-quality results without compromising on ease of use.

A Collaborative Achievement

This cutting-edge probe was developed in collaboration with Measure Analyse Control, led by Tomas Vermeire, and is proudly patented! Our teamwork has resulted in a state-of-the-art tool that sets new standards in spectroscopic analysis.

Ready to Transform Your Spectroscopy?

Elevate your analytical capabilities with the NIRaman Fiber Probe. Discover how this innovative tool can enhance your research and production processes.

Discover the NIRaman Probe

art photonics is proud to announce that our Founder & Senior Adviser, Viacheslav Artyushenko, will open the EPIC TechWatch conference at Asia Photonics Expo 2025. His presentation, "Innovative Fiber Solutions for Life Photonics in 0.3-16µm Range," is scheduled for 26 February 2025 at Marina Bay Sands in Singapore.

We extend our sincere thanks to Asia Photonics Expo and the EPIC - European Photonics Industry Consortium team for this exceptional opportunity. Industry professionals passionate about the transformative potential of broad spectra fiber optics are invited to connect with Viacheslav and explore the future of photonics.

Discover more about EPIC TechWatch and register here.