Pascale Roy
Synchrotron SOLEIL, France
Title: Ultra high resolution spectroscopy and ultra-fast THz measurements using coherent synchrotron radiation
Biography
Biography: Pascale Roy
Abstract
Recently, an unprecedented high power source of THz radiation was made scientifically available: coherent synchrotron radiation (CSR). This radiation produced from relativistic electron bunches of picoseconds duration opens up new territory in the THz range with intensities up to 4 orders of magnitude higher than previous sources. In this mode of operation (200 electron bunches of 100µA each), the total emitted power is 2 mW and its stability is sufficient to perform bunch per bunch spectroscopic measurements based on Electro Optics sampling technique. These promising results clearly lead to the development of new applications including terahertz spectroscopy at the nsec rate without the need for a pump probe technique, as well as ultra-high resolution spectroscopy based on heterodyne mixing technique. We will show how these new techniques have been demonstrated on the AILES beamline of synchrotron SOLEIL.
