Design and Development of a Pulsed, Narrow Linewidth UV Source for Flow Dianostics uri icon


  • A pulsed, high efficiency, narrow linewidth ultraviolet source is developed for gas diagnostics. A mercury lamp is driven with a high voltage (30 kV), 2 nanosecond long, high repetition rate pulse supply that produces a high average power train of pulses. Each pulse in the train has a time varying spectrum that narrows to a single spectral line after 100 nsec or so. This ultra narrow line output falls at 254nm and lends itself to Filtered Rayleigh and Filtered Raman scattering measurements of gas temperature and species when used in conjunction with a mercury vapor filter. A second line at 185 nm is also generated and may be used for air density measurements by oxygen fluorescence.

author list (cited authors)

  • Qian, L., Zaidi, S., Miles, R., & Vasilyak, L.

citation count

  • 0