Optimization of wide band mesa-type enhanced terahertz photoconductive antenna at 1550 nm
Xu Jian-Xing1, 2, Li Jin-Lun1, Wei Si-Hang1, 2, Ma Ben1, 2, Zhang Yi3, Zhang Yu1, 2, Ni Hai-Qiao1, 2, †, Niu Zhi-Chuan1, 2
       

(color online) Amplitudes versus (a) time delay and (b) frequency for the devices with different bonding pad sizes.