Firefly Photonics LLC is organized around development of high performance mid- to long-wave infrared LED and laser technology. In-house capability include the design, growth, microfabrication, and prototype testing to enable volume manufacturing. Advances in infrared LEDs and lasers have enabled technologies in defense, medical imaging, spectroscopy, and gas and chemical sensing. Now these applications are driving the demand for higher radiance, better design control of single and multiple wavelengths, and higher efficiency. Firefly Photonics has developed infrared semiconductor photonic/optoelectronic devices used for thermal scene generation to test and calibrate infrared detector arrays addressing innovation and imporved performance of MIR light sources, waveguides, and detectors, and, through partnerships with Freedom Photonics, to provide highly compact and field-deployable gas sensors.