The advantages of onhyphen;demand pulse charging of highhyphen;voltage (HV) capacitors are discussed, highlighted by use of the technique to reduce the pulse width of a nitrogen laser to subnanosecond. Pulse charging reduces the HV stress on the capacitor dielectric resulting in a more compact laser reducing the discharge time of the laser striphyphen;line capacitor. The HV pulse for charging is produced by switching a lowhyphen;voltage capacitor via a stephyphen;up coil into the HV striphyphen;line capacitor which is then immediately discharged. The system reduces the onhyphen;charge duty cycle to below 0.001.
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