Plasma-assisted temporal shifts of bichromatic femtosecond laser pulses in air

Tamulienė, Viktorija; Buožius, D.; Vaičaitis, V.

doi:10.1103/physreva.103.033502

Cited by 2 publications

(1 citation statement)

References 34 publications

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“…Moreover, recently it was shown that in the case of bichromatic pump the * Author to whom any correspondence should be addressed. efficiency of both processes could decrease significantly due to the plasma-related reshaping of the laser pulses [11]. On the other hand, the broadband emission from the plasma filament can be employed for the atmospheric analysis [3] as well as for the analysis of cultural heritage materials [12] and other objects [13].…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial properties of plasma induced by infrared femtosecond laser pulses in air

Balachninaitė¹,

Skruibis²,

Matijošius³

et al. 2022

Plasma Sources Sci. Technol.

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Space and time-resolved electron density and temperature of the plasma, created in air by focused femtosecond laser pulses have been investigated as a function of the pump pulse energy and duration. For the air ionization the infrared (1030 nm) femtosecond (190-500 fs) Yb:KGW laser pulses of up to 1 mJ energy were used. Based on the Stark broadening of the oxygen-I 777.19-nm line we have found that after establishing a local equilibrium the density of laser-created plasma could exceed 1017 cm-3 with the electron temperature of over 5000 oC. Obtained results agree well with the results of previously reported measurements of the plasma density created by the femtosecond near-infrared Ti:Sapphire laser pulses.

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Section: Introductionmentioning

confidence: 99%

Temporal and spatial properties of plasma induced by infrared femtosecond laser pulses in air

Balachninaitė¹,

Skruibis²,

Matijošius³

et al. 2022

Plasma Sources Sci. Technol.

Self Cite

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Terahertz and far infrared radiation generation in air plasma created by bichromatic subpicosecond laser pulses

Buožius,

Balčas,

Tamulienė

et al. 2024

Applied Physics Letters

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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.

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Plasma-assisted temporal shifts of bichromatic femtosecond laser pulses in air

Cited by 2 publications

References 34 publications

Temporal and spatial properties of plasma induced by infrared femtosecond laser pulses in air

Temporal and spatial properties of plasma induced by infrared femtosecond laser pulses in air

Terahertz and far infrared radiation generation in air plasma created by bichromatic subpicosecond laser pulses

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