We have generated 1–20-GHz microwave pulses by illuminating an Fe-compensated InP wafer with 50-ps optical pulses at normal incidence. The process of the generation of microwave radiation was monitored and analyzed directly through a 40-GHz sampling oscilloscope with precision. The saturation properties, the waveform evolution, and the optical coupling efficiency of the gigahertz photoconducting antenna are discussed. The flexibility, compactness, and high-resolution features offered by this technique merit new applications for radar communication as well as for other microwave detecting devices.
© 1995 Optical Society of America
Original Manuscript: April 11, 1995
Published: July 15, 1995
D. W. Liu, J. B. Thaxter, and D. F. Bliss, "Gigahertz planar photoconducting antenna activated by picosecond optical pulses," Opt. Lett. 20, 1544-1546 (1995)