NLIR (Near-infrared Light Innovations) offers a cutting-edge suite of mid-infrared (MIR) spectroscopy solutions that combine speed, sensitivity, and compact design to meet the demands of both industrial and research environments. Their product ecosystem includes spectrometers, wavelength converters, light sources, interfaces, and accessories, all designed to work seamlessly together.
NLIR’s technology is particularly well-suited for:
NLIR’s product range is designed with a strong emphasis on performance, flexibility, and ease of integration, making it well-suited for both research and industrial environments. The systems offer rapid, full-spectrum data acquisition with high sensitivity, enabling real-time analysis of dynamic processes. Their compact, fibre-coupled design allows for easy deployment in both lab and field settings, while the modular interfaces and accessories support a wide variety of sample types and measurement configurations. Additionally, the ability to convert mid-infrared signals into the visible range for use with standard detectors opens up new possibilities for cost-effective and accessible spectroscopy. With intuitive software and broad API support, NLIR’s solutions are also well-aligned with modern automation and data processing workflows.
The NLIR MIDWAVE Spectrometer is a high-performance, fiber-coupled mid-infrared (MIR) grating spectrometer designed for fast, sensitive, and real-time spectral measurements in the 2.0–5.0 μm wavelength range. It’s built for both industrial and research applications, enabling non-invasive analysis of gases, liquids, solids, and light sources. With a full-spectrum readout rate of 400 Hz and a time resolution of 10 µs, it captures detailed spectral data in milliseconds, making it ideal for dynamic processes and environments where timing is critical.
Overall, the MIDWAVE Spectrometer represents a cutting-edge solution for MIR spectroscopy, combining speed, sensitivity, and flexibility in a user-friendly package suitable for both lab and field use.
Key Features:
Specifications
The NLIR SPEKTRUM Wavelength Converter is a cutting-edge device that enables instantaneous conversion of mid-infrared (MIR) light (1.9–5.3 µm) into the visible/near-infrared (VIS/NIR) range (682–886 nm). This allows users to analyse MIR spectra using standard VIS/NIR detectors, such as silicon-based spectrometers, which are more accessible and cost-effective than traditional MIR detectors. The conversion is achieved using a high-power 1064nm laser and a lithium niobate crystal, all housed in a compact, alignment-free module.
Designed for speed and simplicity, SPEKTRUM performs simultaneous, broadband wavelength conversion with no moving parts or scanning elements, making it ideal for real-time applications. It supports fiber-coupled input and output (SMA-905 and FC/PC connectors), and its compact form factor (306 × 200 × 100 mm, 5 kg) makes it easy to integrate into lab or industrial setups. The device consumes 60–90W of power and operates best at temperatures up to 30°C.
Key Features:
Specifications:
The NLIR Light Sources product line offers high-performance thermal light sources specifically designed to complement NLIR’s mid-infrared (MIR) spectrometers and optical systems. These sources provide broad spectral bandwidths, high output power, and user-friendly operation, making them ideal for a wide range of spectroscopy applications. They are engineered to deliver consistent and efficient MIR illumination, enabling accurate and real-time measurements in both research and industrial environments
NLIR offers two main light source models: FIBER and AURALIS.
FIBER Light Source is optimised for flexible sample illumination. It uses a fiber-coupled output, allowing users to position the fiber tip close to the sample or integrate it with commercially available fiber probes. This makes it ideal for setups requiring precise or remote light delivery. FIBER Datasheet
AURALIS Light Source, on the other hand, is designed for maximum MIR output power. It delivers abundant light, making it especially effective for challenging materials like black plastics or foams, which typically absorb more light. AURALIS is best suited for applications where intense illumination is needed to penetrate or reflect from dark or dense materials. AURALIS Datasheet
The NLIR Interfaces range is designed to work seamlessly with NLIR’s mid-infrared (MIR) spectrometers, offering tailored solutions for precise light delivery and collection across a variety of sample types and measurement setups. Whether you’re conducting reflection or transmission analyses, working with thin films or bulk materials, or require a handheld or fixed configuration, these interfaces provide the flexibility and performance needed for accurate MIR spectroscopy.
There are four key interface models:
Each interface is engineered to preserve the speed, sensitivity, and resolution of NLIR’s spectrometers, ensuring reliable and high-quality data capture in milliseconds.
TOUCH Interface
The NLIR TOUCH Interface is a compact, user-friendly tool designed for fast and reliable mid-infrared (MIR) reflection measurements across a wide range of sample types. Operating in the 1.2–8.0 µm spectral range, it features a built-in 1375 °C silicon carbide light source and a free-space optical interface that directs light onto the sample and collects the reflected signal via an SMA-905 fibre connector. Its design allows for efficient measurements even on irregular or curved surfaces, such as textiles, foams, or printed materials, without the need for complex alignment or sample preparation.
With a collection spot size of 1–2 mm, the TOUCH Interface is ideal for applications requiring localised, high-speed data acquisition, and it integrates seamlessly with NLIR’s MIDWAVE Spectrometer. Its compact footprint (200 × 200 × 100 mm) and low power consumption (22–25 W) make it suitable for both laboratory and portable setups. The TOUCH Interface simplifies MIR spectroscopy by enabling real-time, non-contact reflection measurements with minimal background interference, making it a versatile solution for both research and industrial environments. Datasheet
REFLECTION Interface
The NLIR REFLECTION Interface is a purpose-built optical system designed to efficiently reflect and direct mid-infrared (MIR) light in the 1.0–10.0 µm range. It enables high-speed, real-time reflection measurements by directing light at a 15° angle from a 150 mm distance, making it ideal for both laboratory and industrial-scale applications. The interface is designed to be fibre-coupled with NLIR’s MIDWAVE Spectrometer, ensuring seamless integration and optimal signal collection.
The REFLECTION Interface consists of two key components: the AURALIS Light Source, which provides high-intensity MIR illumination, and the SAMPLER Accessory, which collects the reflected light from the sample. This setup allows users to perform non-contact, non-destructive measurements with high precision and minimal setup time, making it especially useful for analysing surfaces like black plastics, coated metals, or reflective optics in production environments.
TRANSMISSION Interface
The NLIR TRANSMISSION Interface is engineered for fast and straightforward mid-infrared (MIR) transmission measurements, ideal for analysing transparent or semi-transparent samples such as foils, thin films, optical coatings, non-water-based liquids, and gases. Operating across a 1.0–5.0 µm spectral range, it enables real-time data acquisition with high precision, making it well-suited for both research and industrial applications.
The NLIR PRECISION Interface is a specialised optical accessory designed for highly accurate mid-infrared (MIR) reflection measurements on small, well-defined areas of specularly reflecting surfaces. Operating in the 2.0–5.0 µm spectral range, it enables measurements on areas smaller than 500 µm, with a working distance of 22 mm, making it ideal for applications requiring fine spatial resolution and pinpoint accuracy.
The NLIR Collimator and Sampler accessories are precision-engineered tools designed to enhance the performance and flexibility of mid-infrared (MIR) spectroscopy setups by optimising light collection and delivery.
The COLLIMATOR Accessory is a compact and cost-effective solution for coupling collimated MIR light into a fibre or vice versa. It features a 20 mm calcium fluoride (CaF₂) lens and operates in the 2.0–5.0 µm wavelength range. This accessory is ideal for applications requiring efficient light transfer, such as combustion analysis or remote sensing, and can be used in both directions—either to collimate light from a fibre or to focus collimated light into one. Its small footprint (30 × 25 × 25 mm) and lightweight design (46 g) make it easy to integrate into various experimental setups.
The SAMPLER Accessory is designed to capture MIR light from a specific point and couple it into a fibre, making it perfect for analysing samples with diffuse reflectance. It uses two CaF₂ lenses and is also optimised for the 2.0–5.0 µm range. With a working distance of 146 mm and a collection spot size of 1–2 mm, the SAMPLER is well-suited for dynamic or irregular samples, such as foams, textiles, or coated surfaces. It provides stable and efficient light collection even in challenging conditions, and its robust build (80 × 36 × 36 mm, 210 g) ensures durability in both lab and field environments.
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