Generation of terahertz pulses by photoionization of electrically biased air
- 7 July 2000
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 77 (3), 453-455
- https://doi.org/10.1063/1.127007
Abstract
We present an experimental demonstration of the generation of far-infrared (terahertz) pulses by photoionization of electrically biased air with amplified laser pulses. The current surge following photoionization of the air with an applied bias field of 10.6 kV/cm leads to the emission of THz pulses with an intensity which can be almost as high as that of THz pulses radiated from a large-area intrinsic-field GaAs emitter. The spectra peak at higher frequency than those of biased large-area GaAs emitters.Keywords
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