Figure 3
From: Unusual terahertz waveforms from a resonant medium controlled by diffractive optical elements
(a) The spectrum of a typical response, according to Eq. (4), of an oscillator governed by Eq. (2) (see Fig. 2b); The parameters are the same as in Fig. 2. The inset shows the magnified low-frequency part of the spectrum. (b) The temporal waveshape corresponding to (a). The central half-sine wave of duration T0/2 is surrounded by high-frequency oscillations at the pulse edges arising due to the action of the pump pulses which are to be removed with the low-pass filter.
