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Measurement of amplified binary-modulated chirped laser pulses generated by different acousto-optic pulse shaping algorithms

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preprint
posted on 26.12.2020, 12:58 by Vladimir Molchanov, Konstantin YushkovKonstantin Yushkov, Pavel Kostryukov, Petr Gornostaev, Nikolay Vorobiev
The paper belongs to the field of ultrafast optics. Acousto-optic pulse shaping has been studied experimentally for binary intensity modulation in a chirped pulse amplification laser system. Direct time-domain measurement of pulse front duration with a picosecond streak camera was performed for a Ti:sapphire regenerative amplifier. It was discovered that the sign of the second order dispersion produced by the acousto-optic dispersion delay line affects the modulation rise/fall time. Two algorithms for synthesis of ultrasonic waveforms for feeding the delay line, dispersive Fourier synthesis and the Gerchberg-Saxton algorithm, were compared. Minimum pulse front duration of 3.6 ps for 3 mJ pulses with the linear chirp of 6.2 ps/nm at the wavelength of 795 nm was obtained.

Funding

Russian Foundation for Basic Research (18-07-00672)

Ministry of Education and Science of the Russian Federation (075-02-2020-1588)

National University of Science and Technology MISIS (K2-2020-007)

History

Email Address of Submitting Author

konstantin.yushkov@misis.ru

ORCID of Submitting Author

0000-0001-9015-799X

Submitting Author's Institution

National University of Science and Technology MISIS

Submitting Author's Country

Russian Federation

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