Generation and temporal compression of second harmonic pulses of spectrally broadened radiation of a femtosecond ytterbium laser

L. L. Losev, V. S. Pazyuk

P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: It is shown that the use of a second harmonic generation scheme with two sequentially located KDP crystals allows achieving the conversion efficiency of the chirped pulse of ytterbium laser radiation of up to 50%. The obtained second harmonic pulses with a spectrum corresponding to a transform-limited pulse with a duration of 7 fs are compressed to 9 fs.

Keywords: second harmonic, femtosecond lasers, pulse compression.

Received: 01.04.2025
Revised: 08.07.2025
Accepted: 01.08.2025

DOI: 10.61011/PJTF.2025.21.61524.20331

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