TY - CPAPER
AU - Jo, J.S.
AU - Gudkov, B.A.
AU - Jeong, Y.U.
AU - Kim, H.N.
AU - Kim, K.N.
AU - Lee, K.
AU - Miginsky, S.V.
AU - Park, S. H.
AU - Ryu, W.J.
AU - Vinokurov, N.
TI - High-Power Ultrashort Terahertz Pulses generated by a Multi-foil Radiator with Laser-Accelerated Electron Pulses
J2 - Proc. of FEL2015
AB - Terahertz (THz) wave is an attractive source for a variety of research including imaging, spectroscopy, security, etc. We proposed a new scheme of high-power and ultrashort THz generation by using the coherent transition radiation from a cone-shaped multi-foil radiator [*] and a rectangle-shaped multi-foil radiator. To perform the proof-of-principle of the multi-foil THz radiator, we used 80~100 MeV electron bunches from laser-plasma acceleration. While a cone-shaped multi-foil radiator has a circular polarization with a conic wave, we made a rectangle-shaped multi-foil radiator that has a linear polarization in a plane-like wave, which can be used more widely for various applications. We can easily control the power of multi-foil radiator by adjusting the number of foils. We compare the THz power ratio between 1 sheet and multi sheets using cooled bolometer. We will measure the pulse duration and bandwidth of the THz wave from the multi-foil radiators in a single-shot by using electro-optic sampling and cross-correlation method.
PB - JACoW
CY - Geneva, Switzerland
SP - 739
EP - 740
KW - polarization
KW - radiation
KW - electron
KW - timing
KW - laser
DA - 2015/12
PY - 2015
SN - 978-3-95450-134-2
DO - 10.18429/JACoW-FEL2015-WEP082
UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/wep082.pdf
ER -