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

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)133-136
Number of pages4
JournalApplied Physics B: Lasers and Optics
Volume109
Issue number1
DOIs
StatePublished - Oct 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy

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