Influence of chirp of the fundamental frequency pulse radiation on the spectral-time characteristics of second harmonic
The results of second-harmonic generation study for a pre-chirped radiation pulse of fundamental frequency with a central wavelength of 950 nm and duration of 70 fs are presented. It is shown that providing of a small excess group delay dispersion (GDD) (± 3200-4000 fs2) for fundamental frequency radiation in the femtosecond front-end compressor increases by 1.5-2 times of the second harmonic spectrum width. Compensation of the radiation pulses excess dispersion with a broadened spectrum makes it possible to reduce the duration of second harmonic pulse approximately in proportion to the spectrum broadening and get a minimum duration of 35 fs.
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Keywords
вторая гармоника, чирпированный импульс, компрессор, дисперсия групповых скоростей, спектр, длительность импульса, second harmonic, chirped pulse, compressor, group velocity dispersion, spectrum, pulse durationAuthors
| Name | Organization | |
| Alekseev S.V. | Institute of High-Current Electronics Siberian Branch of the Russian Academy of Sciences | sergey100@sibmail.com |
| Ivanov M.V. | Institute of High-Current Electronics Siberian Branch of the Russian Academy of Sciences | mikhan.iv@gmail.com |
| Ivanov N.G. | Institute of High-Current Electronics Siberian Branch of the Russian Academy of Sciences | |
| Losev V.F. | Institute of High-Current Electronics Siberian Branch of the Russian Academy of Sciences | losev@ogl.hcei.tsc.ru |
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