Abstract: 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.

Abstract: A UV lamp including a filter material of doped quartz glass is provided that effects a transparency as high as possible for operating radiation in the ultraviolet spectral range above 210 nm together with low transparency in the wavelength range below about 190 nm. The filter material of doped quartz glass includes at least 99 wt. % of SiO2 and Al2O3, wherein the Al2O3 portion is in the range of 2 wt. % to 4 wt. The filter material has an edge wavelength at a wavelength below 190 nm and a spectral transmission of 80% mm?1 or higher at a wavelength of 210 nm.

Abstract: A UV lamp including a filter material of doped quartz glass is provided that effects a transparency as high as possible for operating radiation in the ultraviolet spectral range above 210 nm together with low transparency in the wavelength range below about 190 nm. The filter material of doped quartz glass includes at least 99 wt. % of SiO2 and Al2O3, wherein the Al2O3 portion is in the range of 2 wt. % to 4 wt. The filter material has an edge wavelength at a wavelength below 190 nm and a spectral transmission of 80% mm?1 or higher at a wavelength of 210 nm.