Theoretical foundations of detection of terahertz radiation in laser-plasma interactions
Journal Article
·
· Plasma Physics Reports
A theory is developed enabling one to calculate the temporal profile and spectrum of a terahertz wave packet from the energy of the second harmonic of optical radiation generated during the nonlinear interaction between terahertz and circularly polarized laser pulses in the skin layer of an overdense plasma. It is shown that the spectral and temporal characteristics of the envelope of the second harmonic of optical radiation coincide with those of the terahertz pulse only at small durations of the detecting laser radiation. For long laser pulses, the temporal profile and spectrum of the second harmonic are mainly determined by the characteristics of optical radiation at the carrier frequency.
- OSTI ID:
- 22156417
- Journal Information:
- Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 2 Vol. 39; ISSN PPHREM; ISSN 1063-780X
- Country of Publication:
- United States
- Language:
- English
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