With the technical advancement of intense femtosecond lasers, experiments on high-harmonic generation (HHG) have greatly extended its emission wavelength and efficiency. Soft X-rays generated by high-harmonics contain properties similar to a driving laser, like femtosecond time duration and temporal and spatial coherence. The frequencies of soft x-rays generated by high harmonics, however are limited to odd integer times the laser frequency. In this paper we present an experimental result that tunable high harmonics can be generated by changing the intensity of a driving femtosecond laser and show that a theoretical analysis based on a semiclassical calculation can give a good explanation of the observed blueshift. This is a non-adiabatic effect observed for the first time in HHG.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Tunable coherent femtosecond soft X-ray source based on high-harmonic generation


    Beteiligte:
    Chang Hee Nam, (Autor:in) / Hyun Joon Shin, (Autor:in) / Dong Gun Lee, (Autor:in) / Yong Ho Cha, (Autor:in) / Kyung Han Hong, (Autor:in)


    Erscheinungsdatum :

    01.01.1999


    Format / Umfang :

    137955 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Coherent, tunable, x-ray emission at 5 nm using high-harmonic generation

    Chang, Z. / Rundquist, A. / Wang, H. et al. | British Library Conference Proceedings | 1997


    Coherent femtosecond X-ray source based on high-order harmonics

    Nam, C.H. / Lee, D.G. / Kim, H.T. et al. | IEEE | 2001


    Phase-coherent femtosecond subharmonic pulse generation

    Kobayashi, Y. / Takada, H. / Kakehata, M. et al. | IEEE | 2003



    WH3 Coherent Femtosecond X-Ray Source by High Order Harmonics

    IEEE | British Library Conference Proceedings | 2001