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Ginzburg, V.N.; Yakovlev, I.V.; Zuev, A.S.; Korobeynikova, A.P.; Kochetkov, A.A.; Kuzmin, A.A.; Mironov, S.Yu; Shaykin, A.A.; Shaikin, I.A.; Khazanov, E.A.
Quantum electronics (Woodbury, N.Y.), 04/2020, Letnik: 50, Številka: 4Journal Article
Two-stage compression of laser pulses with a power of 250 TW is experimentally realised by broadening their spectrum during self-phase modulation in fused silica and subsequent dispersion compensation upon reflection from chirping mirrors. A five-fold decrease in the duration is demonstrated, from 75 to 15 fs, with a B-integral value of about 5 at each stage. It is possible to avoid small-scale self-focusing due to self-filtering of the laser beam during free propagation in vacuum. With optimal parameters of the dispersive mirror, the pulse can be compressed to a duration of less than 5 fs.
