Abstract
The spectral distribution of the conical terahertz emission from a femtosecond laser filament in air is measured with a bolometric detector and a set of filters, confirming that the main part of the emission lies between 0.5 and 3 THz. The efficiency of this terahertz emission is compared with that obtained in air via four wave mixing of femtosecond laser pulses at ω and 2ω in the presence of a plasma.
| Original language | English |
|---|---|
| Article number | 241105 |
| Journal | Applied Physics Letters |
| Volume | 91 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 20 Dec 2007 |
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