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

Yaohui Gao, Chia En Yang, Yunching Chang, Jimmy Yao, Shizhuo Yin, Claire Luo, Paul Ruffin, Christina Brantley, Eugene Edwards

    Research output: Contribution to journalArticlepeer-review

    2 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 1 2012

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)
    • Physics and Astronomy(all)

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