Applied Physics B

, Volume 109, Issue 1, pp 133–136 | Cite as

Terahertz-radiation-enhanced broadband terahertz generation from large aperture photoconductive antenna

  • Yaohui Gao
  • Chia-En Yang
  • Yunching Chang
  • Jimmy Yao
  • Stuart Yin
  • Claire Luo
  • Paul Ruffin
  • Christina Brantley
  • Eugene Edwards
Article
First Online:
Received:
Revised:

Abstract

A technique of enhancing and broadening terahertz (THz) wave radiation from large aperture photoconductive (PC) antenna is presented in this paper. In this technique, the PC antenna is excited by both the optical and previously generated THz pulses by a laser-induced air plasma created in front of PC antenna and an enhanced and broadened THz wave signal is obtained. The theoretical and experimental investigation shows that the superposition is the main mechanism for this enhancement. The technique shown in this paper can be very useful for THz imaging and spectroscopy.

Keywords

Femtosecond Laser ZnTe Optical Pump Unused Portion Nonlinear Optical Rectification 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgments

Authors greatly acknowledge the partial financial support of this work by an ONR basic research program. The views and opinions of its authors do not necessarily state or reflect those of the US Government or any agency thereof. Reference to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the US Government or any agency thereof.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Yaohui Gao
    • 1
  • Chia-En Yang
    • 1
  • Yunching Chang
    • 1
  • Jimmy Yao
    • 1
  • Stuart Yin
    • 1
  • Claire Luo
    • 2
  • Paul Ruffin
    • 3
  • Christina Brantley
    • 3
  • Eugene Edwards
    • 3
  1. 1.Department of Electrical EngineeringThe Pennsylvania State UniversityUniversity ParkUSA
  2. 2.General Opto SolutionsLLCState CollegeUSA
  3. 3.US Army Aviation and Missile Research Development and Engineering CenterRedstone ArsenalUSA

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