Femtosecond Pulses of Terahertz Radiation: Physics and Applications,
IBM THOMAS J WATSON RESEARCH CENTER YORKTOWN HEIGHTS NY
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The use of high-performance, Hertzian-dipole antennas has enabled us to extend the operation of our optoelectronic, pulsed THz beam system to beyond 3 THz and to thereby, determine the limiting time-domain response function of the photoconductive switch. Via this capability, we have characterized a new type of THz source producing 380 fsec pulses, the shortest directly measured THz pulses in free space to date. A high-brightness pulsed THz beam system has been recently developed 1 . This optoelectronic system is based on repetitive, fsec optical excitation of a Hertzian dipole antenna 1,2 embedded in a charged coplanar transmission line structure.
- Electrooptical and Optoelectronic Devices
- Optical Detection and Detectors