| Autor: |
Nikolaeva, I. A., Vrublevskaya, N. R., Rizaev, G. E., Pushkarev, D. V., Mokrousova, D. V., Shipilo, D. E., Panov, N. A., Seleznev, L. V., Ionin, A. A., Kosareva, O. G., Savel'ev, A. B. |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 1/29/2024, Vol. 124 Issue 5, p1-7, 7p |
| Abstrakt: |
We measured and simulated the spectrally resolved angular distributions of 0.3–1-THz emission from the two-color filament with its plasma length (∼40 mm) exceeding the dephasing length (∼25 mm) between the fundamental (740 nm) and the second harmonic (370 nm) pulses in air. We show that only the forwardly propagating on-axis terahertz (THz) radiation is sensitive to the variation of the phase offset φ between fundamental and second harmonics, while the ring-like THz beam carrying ≳ 80 % of the overall THz yield is independent of φ. Utilization of the THz ring allows one to omit the tedious adjustment of the frequency-doubling crystal position in the experiment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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