Comparison of visible and infrared spectrum of light sources- March 2011
M Rakic and Goran Pichler – Institute of Physics, Croatia. Optics Communications, 2011
We compared the visible and the infrared spectrum of cesium and the sodium high pressure discharge light sources of 70 W power, run at different voltages from 180 to 240 V. Although the cesium discharge lamp exhibits remarkable white light in the visible spectrum, it suffers from the large infrared radiation intensity. The study of the causes of large infrared losses and their possible reduction was the main motivation for the present investigation. Sodium discharge plasma appears to be more efficient light source than the cesium discharge plasma due to the smaller infrared emission, although the latter has much better colour rendering index. … 5 mm. For the infrared spectral region the StellarNet RED-Wave spectrometer (512 pixels, resolution 3.1 nm).
