Free-space terahertz electromagnetic pulses driven by femtosecond lasers have been utilized for studying the far-infrared and transient characteristics of various materials and applied to the terahertz imaging. Those experiments can be significantly improved by optimizing the terahertz pulse characteristics such as the pulse width, dispersion, frequency spectrum, etc. However, the characteristics have yet been studied theoretically because they are determined not only by the transport dynamics of photoconductivity generated carriers but also by the antenna and guiding structures. Using finite-difference time-domain (FD-TD) techniques, we characterize the dispersion properties of terahertz pulses at various spatial positions, for example, in the near- and far-field regions, and at the on- and off-axis points. We also consider the carrier transport effect on the dispersion.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Propagation characteristics of free-space terahertz electromagnetic pulses


    Beteiligte:
    Young-Seek Chung, (Autor:in) / Joo-Hiuk Son, (Autor:in) / Changyul Cheon, (Autor:in) / Song-Yop Hahn, (Autor:in)


    Erscheinungsdatum :

    1999-01-01


    Format / Umfang :

    147046 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Propagation of terahertz pulses along planar Goubau lines

    Akalin, T. / Lampin, J.-F. / Desplanque, L. et al. | IEEE | 2006


    Superluminal propagation of terahertz pulses in sub-wavelength structures

    Wynne, K. / Carey, J.C. / Zawadzka, J. et al. | IEEE | 1999


    Propagation effects at the focus of single-cycle terahertz pulses

    Feng, S. / Hunsche, S. / Leitenstorfer, A. et al. | IEEE | 1999


    Propagation and Focusing Characteristics of Intense Terahertz Pulses Generated from a Large Aperture Photoconductive Antenna

    Tsukamoto, K. / Rungsawang, R. / Hattori, T. et al. | British Library Conference Proceedings | 2001