Author/Authors :
E Schomburg، نويسنده , , F Klappenberger، نويسنده , , Volker KrAtschmer، نويسنده , , A Vollnhals، نويسنده , , R Scheuerer، نويسنده , , K.F. Renk، نويسنده , , V Ustinov، نويسنده , , A Zhukov، نويسنده , , A.R Kovsh، نويسنده ,
Abstract :
We report the use of an InGaAs/InAlAs superlattice for detection of THz radiation pulses generated by a free-electron-laser (FELIX). The detector showed a response corresponding to a reduction of the direct current through the superlattice. The current reduction is attributed to the THz-field induced modulation of Bloch oscillations performed by miniband electrons. The detector response was measured in a frequency range between 4 and View the MathML source and showed strong minima at the frequencies of infrared active transverse optic phonons.
