Generation and detection of terahertz pulses using post-process bonding of low-temperature-grown GaAs and AlGaAs

Desplanque, L.; Lampin, J. F.; Mollot, F.
March 2004
Applied Physics Letters;3/22/2004, Vol. 84 Issue 12, p2049
Academic Journal
We present an electro-optical method to measure very high frequency characteristics of planar electronic devices. This method allows one to generate and detect subpicosecond electrical pulses on a coplanar stripline using photoconduction and electroabsorption sampling in transferred low-temperature-grown epitaxial layers. The epitaxial lifted-off films are directly van der Waals bonded on the transmission line under test. Good switching efficiency and short electrical rise time (<490 fs) are measured. A bandwidth of 2.5 THz with 60 dB of dynamic range is obtained. This confers to the technique a large field of applications in ultrahigh-speed electronic measurements. © 2004 American Institute of Physics.


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