A Program to Improve Solar Blind UV (Ultraviolet) Flash Lamps.
Rept. for 1 Sep 80-31 May 82,
SCI-TEC INC PRINCETON NJ
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A study was conducted of UV light sources, particularly XenonH2 flash lamps, in an effort to achieve higher efficiencies in the upper end of the solar blind wavelength region for application to UV communication devices. Lamps containing a number of inert gases with and without added H2, were subjected to detailed spectroscopic examination and their UV output efficiencies compared to that of conventional commercially available lamps of similar physical configuration. A highly versatile power supply capable of delivering very short pulses at variable frequency and power level was designed and built for this purpose. It incorporates the capacity of hold off capacitor recharge for specifiable times between pulses in order to minimize premature lamp firing which produces holdover and renders the source useless for Fm or pulse position modulation operation. Modest increases in efficiency were achieved by increasing Xe pressure and operating the lamps at the highest power and voltage levels compatible with the structural strength of the lamp and frequency range selected for operation.
- Air Conditioning, Heating, Lighting and Ventilating
- Ultraviolet Detection and Detectors