Abstract
ABSTRACT We have developed an intense, white emission spectrum, nanosecond pulsed light source using a commercially availableXe short-arclamp. This light source is simple in construction, physically compact and easy to operate. In the previousstudy, we have applied 35-75W type lamp as the light source. In the present study we applied two 150W type Xe-arclamps. Because the electrode gap of the 150W lamp is wider than that of 35-75W type, applied voltage higher than 16kVis required for the pulsed operation of the 150W lamp. Intense light pulses as large as 140W (peak power) of 15.2nsduration (FWI-IM) were obtainedrepetitively from the Xe lamps. This lamp produced broadband emission spectrum(250-650mn) according to discharge of Xe gas. Present lamp operation is free-running type, but it is possible to control thedischarge timing using a thyratron. The intense emission characteristic can be utilized not only as the excitation lightsource in time-resolved fluorometry but also as the stroboscopic illumination source in high-speed photograph.keywords4anosecond pulsed light source, flashlamp, Xe-arclamp, stroboscopic light source
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