This article is cited in 12 papers

INSTRUMENTS AND METHODS OF INVESTIGATION

Uncertainty relation for modulated broadband laser pulses

K. B. Yushkov^a, V. Ya. Molchanov^a, E. A. Khazanov<sup>b

a</sup> National University of Science and Technology MISIS, Moscow
^b Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod

Abstract: The shaping of picosecond laser pulses with complicated amplitude and phase modulations is applied in various problems concerning the interaction of radiation with matter. Such pulses are generated by modulating femtosecond laser pulses with the help of programmable spectral filters with a complex transmission function based on spatial light modulators or acousto-optic dispersion delay lines. It is shown that the number of resolved elements and their contrast upon modulating chirped laser pulses satisfy the uncertainty relation, and the optimal bandwidth of the filter is twice the frequency range of the laser pulse. The results are experimentally confirmed for a femtosecond Ti:Sapphire laser with a high-resolution dispersion delay line.

Keywords: femtosecond laser pulse, pulse shaper, dispersion delay line, acousto-optic diffraction, uncertainty relation.

PACS: 42.65.Re, 42.79.Jq

Received: June 6, 2020
Accepted: June 22, 2020

DOI: 10.3367/UFNr.2020.06.038793

 English version: Physics–Uspekhi, 2021, 64:8, 828–835

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