Excitation of high-frequency oscillations by a laser pulse
Askar'yan G. A., Raevskii I. M.
We investigate the excitation of high-frequency electromagnetic oscillations when a laser pulse is applied to an electrode connected to a resonance circuit. There is a marked increase in the amplitude of the oscillations as the front of the laser pulse is steepened. Amplitudes of ~100 A at frequencies of ~100 MHz are obtained for current oscillations. The possibility of exciting sub-centimeter and sub-millimeter oscillations by means of picosecond laser pulses is discussed for the case when planar or volume resonances are used, and the resonant driving of laser-modulated oscillations is examined. Possible applications of these effects are mentioned.