Details
| Original language | English |
|---|---|
| Article number | 095402 |
| Journal | Laser Physics |
| Volume | 28 |
| Issue number | 9 |
| Publication status | Published - 10 Jul 2018 |
Abstract
Influence of laser-preformed plasma on the energy and spatial properties of terahertz (THz) emission generated in air by focused femtosecond bichromatic laser pulses has been investigated. It was found that the power of THz waves decreases in the presence of the prepulse-created plasma even when the crossing point of the two laser beams is well before or after the pump beam focus. Analysis of the experimentally obtained data revealed that at least two different mechanisms - namely, phase modification of the pump waves and screening of THz radiation by preformed plasma filaments - are responsible for this effect.
Keywords
- air plasma screening, bichromatic laser pulses, diffraction, terahertz generation
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Instrumentation
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Laser Physics, Vol. 28, No. 9, 095402, 10.07.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of laser-preformed plasma on THz wave generation in air by bichromatic laser pulses
AU - Vaičaitis, V.
AU - Ivanov, M.
AU - Adomavičius, K.
AU - Svirskas,
AU - Morgner, Uwe
AU - Babushkin, Ihar
PY - 2018/7/10
Y1 - 2018/7/10
N2 - Influence of laser-preformed plasma on the energy and spatial properties of terahertz (THz) emission generated in air by focused femtosecond bichromatic laser pulses has been investigated. It was found that the power of THz waves decreases in the presence of the prepulse-created plasma even when the crossing point of the two laser beams is well before or after the pump beam focus. Analysis of the experimentally obtained data revealed that at least two different mechanisms - namely, phase modification of the pump waves and screening of THz radiation by preformed plasma filaments - are responsible for this effect.
AB - Influence of laser-preformed plasma on the energy and spatial properties of terahertz (THz) emission generated in air by focused femtosecond bichromatic laser pulses has been investigated. It was found that the power of THz waves decreases in the presence of the prepulse-created plasma even when the crossing point of the two laser beams is well before or after the pump beam focus. Analysis of the experimentally obtained data revealed that at least two different mechanisms - namely, phase modification of the pump waves and screening of THz radiation by preformed plasma filaments - are responsible for this effect.
KW - air plasma screening
KW - bichromatic laser pulses
KW - diffraction
KW - terahertz generation
UR - http://www.scopus.com/inward/record.url?scp=85050968409&partnerID=8YFLogxK
U2 - 10.1088/1555-6611/aaca5f
DO - 10.1088/1555-6611/aaca5f
M3 - Article
AN - SCOPUS:85050968409
VL - 28
JO - Laser Physics
JF - Laser Physics
SN - 1054-660X
IS - 9
M1 - 095402
ER -