Femtosecond Pulses of Terahertz Radiation: Physics and Applications,

Abstract

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.

Document Details

Document Type
Technical Report
Publication Date
May 22, 1992
Accession Number
ADP007631

Entities

People

  • D. Grischkowsky
  • N. Katzenellenbogen

Organizations

  • IBM Thomas J. Watson Research Center

Tags

DTIC Thesaurus Topics

  • Antennas
  • Brightness
  • Dipole Antennas
  • Dipoles
  • Electromagnetic Radiation
  • Electronics
  • Excitation
  • Femtosecond Time
  • Optoelectronics
  • Physics
  • Picosecond Time
  • Radiation
  • Terahertz Radiation
  • Time Domain
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Pulsed Power and Plasma Physics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Space