Details
| Original language | English |
|---|---|
| Article number | 071113 |
| Number of pages | 7 |
| Journal | Applied physics letters |
| Volume | 124 |
| Issue number | 7 |
| Publication status | Published - 12 Feb 2024 |
Abstract
Here, we report on terahertz (THz) radiation generation in air driven by the fundamental and second harmonic of Yb:KGW laser pulses with durations of a few hundred femtoseconds. It was found that the spectrum of generated THz pulses surprisingly spans up to 50 THz, which is comparable to that usually obtained using much shorter Ti:sapphire laser pulses. The broad bandwidth is attributed to a strong spatiotemporal reshaping of the pump pulses in a filament. The achieved energy conversion efficiency is comparable to the one usually obtained from much shorter pump pulses and could be further improved by an optimized experimental setup. The obtained results indicate that compact Yb-based sources provide an attractive alternative to much larger and expensive laser systems.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Applied physics letters, Vol. 124, No. 7, 071113, 12.02.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Terahertz and far infrared radiation generation in air plasma created by bichromatic subpicosecond laser pulses
AU - Buožius, D.
AU - Balčas, G.
AU - Tamulienė, V.
AU - Babushkin, I.
AU - Morgner, U.
AU - Vaičaitis, V.
N1 - Funding Information: This project has received funding from the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 871124 Laserlab-Europe. This study was performed under the “Universities' Excellence Initiative” programme. I.B. and U.M. are thankful for funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453).
PY - 2024/2/12
Y1 - 2024/2/12
N2 - Here, we report on terahertz (THz) radiation generation in air driven by the fundamental and second harmonic of Yb:KGW laser pulses with durations of a few hundred femtoseconds. It was found that the spectrum of generated THz pulses surprisingly spans up to 50 THz, which is comparable to that usually obtained using much shorter Ti:sapphire laser pulses. The broad bandwidth is attributed to a strong spatiotemporal reshaping of the pump pulses in a filament. The achieved energy conversion efficiency is comparable to the one usually obtained from much shorter pump pulses and could be further improved by an optimized experimental setup. The obtained results indicate that compact Yb-based sources provide an attractive alternative to much larger and expensive laser systems.
AB - Here, we report on terahertz (THz) radiation generation in air driven by the fundamental and second harmonic of Yb:KGW laser pulses with durations of a few hundred femtoseconds. It was found that the spectrum of generated THz pulses surprisingly spans up to 50 THz, which is comparable to that usually obtained using much shorter Ti:sapphire laser pulses. The broad bandwidth is attributed to a strong spatiotemporal reshaping of the pump pulses in a filament. The achieved energy conversion efficiency is comparable to the one usually obtained from much shorter pump pulses and could be further improved by an optimized experimental setup. The obtained results indicate that compact Yb-based sources provide an attractive alternative to much larger and expensive laser systems.
UR - http://www.scopus.com/inward/record.url?scp=85185348678&partnerID=8YFLogxK
U2 - 10.1063/5.0188581
DO - 10.1063/5.0188581
M3 - Article
AN - SCOPUS:85185348678
VL - 124
JO - Applied physics letters
JF - Applied physics letters
SN - 0003-6951
IS - 7
M1 - 071113
ER -