Analysis of the modulation depth of some femtosecond laser pulses in holographic interferometry

In this paper, we discuss the quality of holograms generated by two-femtosecond laser pulses of two different colors based on the interference and holography processes by the calculation of the modulation depth. Some numerical simulations for the two Higher-order sh- and ch-Gaussian temporal profile...

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Bibliographic Details
Published inOptical and quantum electronics Vol. 53; no. 8
Main Authors Benzehoua, H., Dalil-Essakali, L., Belafhal, A.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2021
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Computer Communication Networks
Electrical Engineering
Femtosecond pulses
Holograms
Holographic interferometry
Interferometry
Lasers
Modulation
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Modulation depth
Frequency detuning
Sh-Gaussian profile
Femtosecond laser pulses
Ch-Gaussian profile
Holograms
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Summary:In this paper, we discuss the quality of holograms generated by two-femtosecond laser pulses of two different colors based on the interference and holography processes by the calculation of the modulation depth. Some numerical simulations for the two Higher-order sh- and ch-Gaussian temporal profiles (shnGTP and chnGTP) are investigated. These simulations show that, when two lasers with a very large frequency detuning are used, the considered profiles exhibit more precise results and give new frequency detuning zones that allow a very significant value of the modulation depth to fringe contrast (MDFC) ratio to obtain the best hologram compared to Gaussian profile. The proposed theory will be a good basis for the development of some new experiments on holographic interferometry and it will certainly be very useful for the specialists using these femtosecond laser pulses.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-021-03133-1