Single-cycle terahertz pulses with >0.2 V/Å field amplitudes via coherent transition radiation

Authors

• Dan Daranciang, Stanford University
• John Goodfellow, Stanford University
• Matthias Fuchs, University of Nebraska - LincolnFollow
• Haidan Wen, Argonne National LaboratoryFollow
• Shambhu Ghimire, SLAC National Accelerator LaboratoryFollow
• David A. Reis, Stanford University
• Henrik Loos, SLAC National Accelerator Laboratory
• Alan Fisher, SLAC National Accelerator Laboratory
• Aaron Lindenberg, Stanford UniversityFollow

Document Type

Article

Date of this Version

2011

Citation

Applied Physics Letters 99, 141117 (2011); doi: 10.1063/1.3646399.

Comments

Copyright 2011 American Institute of Physics. Used by permission.

Abstract

We demonstrate terahertz pulses with field amplitudes exceeding 0.2 V/Å generated by coherent transition radiation. Femtosecond, relativistic electron bunches generated at the Linac Coherent Light Source are passed through a beryllium foil, and the emitted radiation is characterized as a function of the bunch duration and charge. Broadband pulses centered at a frequency of 10 THz with energies of 140 µJ are measured. These far-below- band gap pulses drive a nonlinear optical response in a silicon photodiode, with which we perform nonlinear autocorrelations that yield information regarding the terahertz temporal profile.