Combined radiator for spectrophotometer in the spectral range from 200 to 1100 nm

The paper is devoted to the previously proposed combined emitter for spectrophotometers ( S. I. Maximov et al., 2010; L. N. Gall et al., 2005 ) improvement which provides the emission range expansion from hard ultraviolet to infrared. The improvement consists in the simultaneous introduction of two electrodeless lamps filled with various metals that are installed on axis of the common resonator. It allows to increase the emitter power and brightness in the UV region significantly and at the same time to leave its compactness unchanged. Also the implementations features of the proposed principle were described and the new combined emitter construction was shown. Moreover an example of the emission spectrum in one of the operating modes was demonstrated.