UV spectroscopy is a robust, non-contact process which can be used for inline monitoring of a majority of organic compounds. While absorption spectroscopy is more universally applicable, fluorescence can offer high sensitivity and selectivity. Traditionally, deuterium or xenon flash lamps have been used for spectroscopy since these light sources supply ample light in the UV wavelengths. However, these light sources emit light in a broad spectrum which needs to be filtered out to measure or monitor specific compounds. In addition, these lamps require expensive power supplies and hence, have a large system cost. Deuterium lamps have a relatively low lifetime and consequently, require more frequent replacement. Xenon flash lamps have a poor stability of light output and therefore a lower limit of detection.