New Terahertz Beam Imaging Device

Recently a new electro-optic detection system has been used to characterize the temporal and spatial distribution of free-space broadband, pulsed electromagnetic radiation (THz beams). This detection system, which uses an electro-optic crystal sensor, provides diffraction-limited spatial resolution, femtosecond temporal resolution, DC-THz spectral bandwidth, and subĀ¬milli-volt per centimeter field detectability. The sensitivity and bandwidth of the electro-optic detectors are comparable or superior to conventional ultrafast photo-conductive dipole antennas and liquid helium cooled bolometers. Advantages intrinsic to electro-optic detection include nonresonant frequency response, large detector area, high scan rate, low optical probe power, and large linear dynamic range.

Access to the full text of this article is restricted. In order to view this article please log in.

Add a Comment