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We have developed time-domain attenuated-total-reflection spectroscopy using terahertz pulses (THz-TD-ATR). Accuracy in the time-domain measurements enables us to determine not only a change of reflection but phase shift originating from surface plasmon in InAs
THz-radiation power from femtosecond pulse irradiated InAs is found to be saturated at the high magnetic field around 3T. We have also observed interesting dependence of the frequency and the spectral width of the radiation.
Summary form only given. We report saturation of THz-radiation from femtosecond-laser irradiated InAs in a high magnetic field We have found the saturation of the THz-radiation power on the applied magnetic field. The optimum magnetic field was found to be 3 T. We have also observed interesting dependence of the frequency and the spectral width of the radiation.
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