@article{oai:nagoya.repo.nii.ac.jp:00010789, author = {Kasai, S and Katagiri, T and Takayanagi, J and Kawase, K and Ouchi, T}, issue = {11}, journal = {APPLIED PHYSICS LETTERS}, month = {Mar}, note = {A broadband terahertz time-domain spectroscopy (TDS) system for frequencies of up to 15 THz, including the phonon resonance frequency range, has been developed using a transferred thin-film photoconductive switch (PCS) detector. The thin-film PCSs, based on low-temperature-grown GaAs, were fabricated using epitaxial layer transfer onto high-resistivity Si substrates. We observed a reduction of phonon resonant absorption, including between 7 and 10 THz, in a forward radiation configuration. Numerically calculated absorption spectra show good agreement with our experimental results. This technique will provide compact, broadband TDS systems.}, pages = {113505--113505}, title = {Reduction of phonon resonant terahertz wave absorption in photoconductive switches using epitaxial layer transfer}, volume = {94}, year = {2009} }