Temporal and spatial properties of plasma induced by infrared femtosecond laser pulses in air
| Autor: | O Balachninaitė, J Skruibis, A Matijošius, V Vaičaitis |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Plasma Sources Science and Technology. 31:045001 |
| ISSN: | 1361-6595 0963-0252 |
| DOI: | 10.1088/1361-6595/ac5c62 |
| Popis: | 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 °C. 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. |
| Databáze: | OpenAIRE |
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