infrared millimeter terahertz waves scientific conferences

The high-gain mode of GAAS PCA is achieved at the bias electric field is 34.52 kV/cm. When the multiplication ratio is 16.92 times, the peak-to-peak value of THz electric field radiated is about 4.19 times of the linear mode, Result indicate that the power of THz wave radiated by GaAs PCA can be greatly enhanced due to the avalanche multiplication effect of carriers in the high-gain quenched mode.