• Input Optical Bandwidth: 1.9 – 5.3 µm
• Output Optical Bandwidth: 682 - 886 nm
• Conversion Resolution: 3 cm^-1
• Conversion Efficiency: 5 x 10^-4
• Optical Input: SMA-905 Fiber Connector
• Optical Output: FC/PC Fiber Connector
• Polarization Sensitivity: Vertical
• Power Consumption: 60 - 90 W
• Operating Temperature: 18 - 30 °C
• Dimensions: 306 x 200 x 100 mm
• Weight: 5 kg
• Mounting: 4 x 1” Posts

The NLIR SPEKTRUM Wavelength Converter transforms mid-infrared light (1.9 – 5.3 µm) into visible/near-infrared light (682 – 886 nm), allowing detection with standard silicon-based detectors. This conversion facilitates the use of conventional VIS/NIR detectors for spectral analysis.

The device is fiber-coupled at both input and output ports for convenience and is compatible with spectrometers like the Wasatch Photonics Cobra-S OCT and Avantes AvaSpec-VARIUS.

The conversion efficiency of 5 x 10^-4 is due to the broad wavelength range. Despite appearing low, the efficiency is offset by reduced mid-infrared background radiation and lower noise from silicon-based detectors, enhancing measurement sensitivity.

NLIR's upconversion technology enables real-time mid-infrared OCT in the 2 – 5 µm range, expanding OCT applications to materials like ceramics, resins, and coatings.

The SPEKTRUM Wavelength Converter allows the use of existing VIS-NIR equipment for analyzing mid-infrared spectra. The output graph demonstrates the converter's performance on a VIS/NIR grating spectrometer with a 70 ms exposure time.

The document includes detailed technical drawings showing the design and dimensions of the SPEKTRUM Wavelength Converter, highlighting the input port, output port, and ventilation grille.