Accuracy of the duration estimates of ultrashort laser pulses using a single-shot second-order intensity autocorrelator

The accuracy of estimating the duration of single-cycle laser pulses with centre wavelengths of 910 and 780 nm is analysed using a single-shot second-order intensity autocorrelator. It is shown that estimates of the single-cycle pulse duration with an error of less than 5 % require the use of KDP cr...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 50; no. 4; pp. 354 - 360
Main Authors Kuzmin, I.V., Mironov, S.Yu, Khazanov, E.A.
Format Journal Article
LanguageEnglish
Published Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.04.2020
IOP Publishing
Subjects
ACCURACY
autocorrelator
BEAMS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONVERGENCE
CRYSTALS
ERRORS
HARMONIC GENERATION
HARMONICS
KDP crystals
LASERS
Pulse duration
PULSES
Second harmonic generation
THICKNESS
three-wave interaction
ultrashort laser pulses
WAVELENGTHS
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Summary:The accuracy of estimating the duration of single-cycle laser pulses with centre wavelengths of 910 and 780 nm is analysed using a single-shot second-order intensity autocorrelator. It is shown that estimates of the single-cycle pulse duration with an error of less than 5 % require the use of KDP crystals with a thickness of no more than 10 μm for the second harmonic generation. At the same time, to estimate the duration of a transform-limited pulse containing ten optical cycles, the crystal thickness can be up to 1 mm. In this case, at an optimum angle of convergence of the first-harmonic beams, the duration estimation error is less than 2 %.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL17310