Author/Authors :
Azuma، نويسنده , , J. and Asaka، نويسنده , , S. and Tsujibayashi، نويسنده , , T. and Itoh، نويسنده , , M. and Watanabe، نويسنده , , M. and Arimoto، نويسنده , , O. and Nakanishi، نويسنده , , S. and Itoh، نويسنده , , H. and Kamada، نويسنده , , M.، نويسنده ,
Abstract :
A new TAC-MCA detection system has been developed for combined laser–SR spectroscopy such as two-photon excitation or pump-probe experiments in the VUV region. In order to improve the signal to noise ratio, the time structure under partial-filling operation of UVSOR is utilized together with this detection system. In our experiment, where the two-photon excitation efficiency of laser and SR is more important than the time resolution, a pulse stretching technique using optical fiber is applied to the output pulse of a CW mode-locked Ti : sapphire laser. The usefulness of the present system is successfully demonstrated by observing luminescence signals from the two-photon-excited core state in BaF2 crystals.
Keywords :
two-photon excitation , Auger-free luminescence , Combined laser–SR spectroscopy , Time-resolved photon counting method
