| Autor: |
Krylov, A. A., Gladyshev, A. V., Senatorov, A. K., Yatsenko, Yu. P., Kolyadin, A. N., Kosolapov, A. F., Khudyakov, M. M., Likhachev, M. E., Bufetov, I. A. |
| Zdroj: |
Bulletin of the Lebedev Physics Institute; 2022 Suppl 1, Vol. 49, pS7-S20, 14p |
| Abstrakt: |
The Raman generation parameters at a wavelength of 2.84 μm in a hollow-core revolver fiber filled with methane are studied, dependent on the gas pressure and on the energy and duration of chirped pulses of erbium fiber-optic pumping source with a wavelength of 1.56 μm. It is shown that the threshold energy of pumping pulses decreases as the methane pressure increases, and the growth in their duration promotes more efficient Raman conversion 1.56 μm → 2.84 μm. The maximum pulse energy at a wavelength of 2.84 and the quantum conversion efficiency are 1.6 μJ and 12%, respectively. It is numerically demonstrated that the quantum conversion efficiency can be increased up to the value above 50% at single-mode pumping radiation with pulse energy up to 100 μJ. The calculations show that the main process limiting the Raman conversion efficiency in the studied parameter range is the coherent four-wave interaction. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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