Introduction
The document discusses the characterization of infrared light sources using the MIDWAVE Spectrometer, a tool designed for fast and sensitive spectroscopy. It highlights the advantages of this spectrometer over conventional FTIR spectrometers, particularly in terms of speed and sensitivity.

Specifications
The MIDWAVE Spectrometer operates within a bandwidth of 2.0 - 5.0 µm and offers a resolution of 6 cm^-1. It can achieve a maximum full spectrum readout rate of 400 Hz, making it highly efficient for characterizing light sources.

Procedures
To measure the emission spectrum of a light source, the COLLIMATOR Accessory is attached to the input of an infrared fiber, which is then connected to the MIDWAVE Spectrometer. This setup allows for quick and accurate measurements of various light sources.

Examples and Data
The document provides examples of measurements taken from different infrared light sources, including an 800 °C blackbody, a mid-infrared supercontinuum light source, two mid-infrared LEDs, and a He-Ne laser. The raw data, presented without smoothing or post-processing, demonstrates the spectrometer's capability to update spectra in real-time.

Conclusion
The MIDWAVE Spectrometer is presented as a reliable and efficient solution for the characterization of infrared light sources, offering rapid data acquisition and real-time measurement capabilities.