Terahertz generation from laser filaments in the presence of a static electric field in a plasma
- Physics Department, Indian Institute of Technology, Delhi, New Delhi 110016 (India)
Two femtosecond laser pulses with frequencies {omega}{sub 1} and {omega}{sub 2} that undergo filamentation in a plasma couple nonlinearly in the presence of a transverse, static electric field to generate terahertz wave at the frequency {omega}{sub 1}-{omega}{sub 2}. The coupling is enhanced in the presence of the static electric field. We develop a theoretical model and observe over 30 times increase in the magnitude of normalized terahertz amplitude by applying a dc electric field ~50kV/cm.
- OSTI ID:
- 22047143
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 18; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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