Single-cycle Terahertz Pulses with >0.2 V/A Field Amplitudes via Coherent Transition Radiation
We demonstrate terahertz pulses with field amplitudes exceeding 0.2 V/{angstrom} 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 {mu}J are measured. These far-below-bandgap pulses drive a nonlinear optical response in a silicon photodiode, with which we perform nonlinear autocorrelations that yield information regarding the terahertz temporal profile. Simulations of the spatiotemporal profile agree well with experimental results.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1035101
- Report Number(s):
- SLAC-PUB-14607; APPLAB; TRN: US1201096
- Journal Information:
- Appl. Phys. Lett. 99, 141117 (2011), Vol. 99, Issue 14; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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