With the support of US Government SBIR and BAA program awards, SSI has utilized its multidisciplinary expertise to develop novel optical sensing technologies and build a variety of custom ground – and aircraft – based instruments — including spectral imagers and spectrometers covering wavelengths from the ultraviolet through long wave infrared, and diode, Raman and gas correlation sensors for gaseous species such as water vapor, hydrogen, hydrogen chloride, hydrogen fluoride, carbon monoxide, oxygen, nitrogen dioxide, ammonia, and hydrazine.