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Measurement of amplified binary-modulated chirped laser pulses generated by different acousto-optic pulse shaping algorithms
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  • Vladimir Molchanov ,
  • Konstantin Yushkov ,
  • Pavel Kostryukov ,
  • Petr Gornostaev ,
  • Nikolay Vorobiev
Vladimir Molchanov
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Konstantin Yushkov
National University of Science and Technology MISIS

Corresponding Author:[email protected]

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Pavel Kostryukov
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Petr Gornostaev
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Nikolay Vorobiev
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Abstract

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.
Oct 2021Published in Optics & Laser Technology volume 142 on pages 107220. 10.1016/j.optlastec.2021.107220