BROADBAND SEMICONDUCTOR-BASED UV LIGHT SOURCE FOR A SPECTRAL ANALYSIS DEVICE

摘要

A semiconductor-based UV light source for a spectral analysis device is provided. The semiconductor-based UV light source includes a housing, in which at least one semiconductor-based emitter for emitting UV light is accommodated, and in which a beam path is formed between the semiconductor-based emitter and a beam exit point for a working beam. To provide a light source having a semiconductor-based emitter which is capable of covering at least a majority of the UV spectrum of 200 to 400 nm with its emission, the semiconductor-based emitter is designed to emit UV excitation light having an average wavelength in the range of 150 to 270 nm, and that a phosphor be provided in the beam path, which partially absorbs the UV excitation light and emits a phosphor radiation in such a way that UV excitation light and phosphor radiation are overlaid to form a working beam, which has a spectral bandwidth of at least 50 nm in the wavelength range of 200 to 400 nm.