title: Ultrabroadband terahertz field detection by proton-bombarded InP photoconductive antennas.
abstract: Photoconductive (PC) antennas fabricated on InP bombarded with 180 keV protons of different dosages (InP:H+) all exhibit a useful bandwidth of about 30 THz, comparable to that of the LT-GaAs PC antenna. The peak signal current of the best InP: H+ device (dosage of 10;15 ions/cm;2) is slightly higher than that of the LT-GaAs one, while the signal-to-noise ratio (SNR) of the former is about half of that of the latter due to lower resistivity. This suggests that InP: H+ can be a good substrate for THz PC antennas with proper annealing and/or implantation recipe.
authors.forename: Tze-An
authors.initials: TA
authors.lastname: Liu
authors.forename: Masahiko
authors.initials: M
authors.lastname: Tani
authors.forename: Makoto
authors.initials: M
authors.lastname: Nakajima
authors.forename: Masanori
authors.initials: M
authors.lastname: Hangyo
authors.forename: Kiyomi
authors.initials: K
authors.lastname: Sakai
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Nakashima
authors.forename: Ci-Ling
authors.initials: CL
authors.lastname: Pan