Main > Chinese Optics Letters >  Volume 16 >  Issue 11 >  Page 110401 > Article

Fig. 1. Experimental setup. L: convex lens. PM: parabolic mirror.

Download full sizeView in Article

Fig. 2. (a) THz time-domain waveforms and (b) THz frequency-domain spectra with different modulation powers. The pump power is set as 0.6 W.

Download full sizeView in Article

Fig. 3. (a) THz signal of three representative excitation pump powers of 0.4 W, 0.6 W, and 0.8 W in the presence of pre-formed plasma as a function of the relative time between the pump beam and the modulation beam. (b) The effect of the modulated laser intensity on the THz wave modulation depth.

Download full sizeView in Article

Fig. 4. THz wave polarization under different modulation powers.

Download full sizeView in Article