OPTICAL SPECKLE-FIELD VISIBILITY DIMINISHING BY REDUCTION OF A TEMPORAL COHERENCE
Mikhaylo Vasnetsov
Institute of Physics of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0000-0002-8634-4896
Valeriy Voytsekhovich
Institute of Physics of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0000-0002-7196-729X
Vladislav Ponevchinsky
Institute of Physics of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0009-0003-7250-3619
Nataliia Kachalova
1Institute of Physics of the National Academy of Sciences of Ukraine; 2L.M. Litvinenko Institute of Physical and Organic Chemistry and Carbon Chemistry of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0000-0002-9956-5380
Alina Khodko
Institute of Physics of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0000-0001-5685-1013
Oleksanr Mamuta
Institute of Physics of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0000-0002-6404-5879
Volodymyr Pavlov
machinehead6926@gmail.comVinnitsia National Technical University (Ukraine)
https://orcid.org/0000-0002-0717-7082
Vadym Khomenko
Institute of Physics of the National Academy of Sciences of Ukraine (Ukraine)
https://orcid.org/0000-0002-7926-9277
Natalia Manicheva
Odessа Polytechnic National University (Ukraine)
https://orcid.org/0000-0002-3043-5342
Abstract
The paper is a report of an experimental study to suppress the speckle structure of a coherent optical field. The technique proposed is based on the reduction of the temporal coherence utilizing enriching the output spectrum of Nd:YVO4 laser with intra-cavity second harmonic generation by additional emission lines. Temperature-controlled simultaneous emission of two components at 1.063 mm and 1.066 mm with nearly equal intensities in IR is achived. In the second-harmonic output the emission lines 531.7 nm, 532.3 nm and 532.8 nm were recorded. The influence of the spectrum variation on the formation of a speckle field was checked. Successfully removed intensity zeros and reduced contrast (visibility) from 0.92 to 0.65 in a light scattered by a ground glass diffuser at the angle 35°. A simple consideration of the speckle field dumping mechanism is presented.
Keywords:
speckle field, coherence, visibilityReferences
Arkhelyuk A. D. et al.: Characteristics of polychromatic speckle fields and temporal coherence. Proc. SPIE 8338, 2011, 833805.
DOI: https://doi.org/10.1117/12.921140
Google Scholar
Baranova N. B. et al.: Wave-front dislocations: topological limitations for adaptive systems with phase conjugation. J. Opt. Soc. Am. 73, 1983, 525–528.
DOI: https://doi.org/10.1364/JOSA.73.000525
Google Scholar
Born M., Wolf E.: Principles of Optics. Cambridge University Press, Cambridge 1999.
Google Scholar
Dayan Li et al.: Speckle suppression by doubly scattering systems. Applied Optics 52, 2013, 8617–8626.
DOI: https://doi.org/10.1364/AO.52.008617
Google Scholar
Goodman J.: Some fundamental properties of speckle. J. Opt. Soc. Am. 66, 1976, 1145–1150.
DOI: https://doi.org/10.1364/JOSA.66.001145
Google Scholar
Goodman J. W., Speckle Phenomena in Optics: Theory and Applications, 1st ed. Roberts & Company, 2006, 125–149.
Google Scholar
Kompanets I., Zalyapin N.: Methods and Devices of Speckle – Noise Suppression. Optics and Photonics Journal, 10, 2020, 219–250.
DOI: https://doi.org/10.4236/opj.2020.1010023
Google Scholar
Kukharchuk V. et al.: Features of the angular speed dynamic measurements with the use of an encoder. Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska – IAPGOS 12(3), 2022, 20–26.
DOI: https://doi.org/10.35784/iapgos.3035
Google Scholar
Nye J., Wright F. J.: Natural Focusing and Fine Structure of Light: Caustics and Wave Dislocations. Am. J. Phys. 68(8), 2000, 776 [https://doi.org/10.1119/1.19543].
DOI: https://doi.org/10.1119/1.19543
Google Scholar
Pavlov S. et al.: Electro-optical system for the automated selection of dental implants according to their colour matching. Przegląd elektrotechniczny 93(3), 2017, 121–124.
DOI: https://doi.org/10.15199/48.2017.03.28
Google Scholar
Schmitt J. M., Xiang S. H., Yung K. M.: Speckle in Optical Coherence Tomography. Journal of Biomedical Optics 4, 1999, 95–105.
DOI: https://doi.org/10.1117/1.429925
Google Scholar
Turri G. et al.: Temperature-dependent stimulated emission crosssection in Nd3+:YVO4 crystals. J. Opt. Soc. Am. 26(11), 2009.
DOI: https://doi.org/10.1364/JOSAB.26.002084
Google Scholar
Vasnetsov M., Soskin M., Pasko V.: Topological configurations of cross-coupled polarization singularities in a space-variant vector field. Optics Communications 63, 2016, 181–187.
DOI: https://doi.org/10.1016/j.optcom.2015.11.019
Google Scholar
Wójcik W., Pavlov S., Kalimoldayev M.: Information Technology in Medical Diagnostics II. London: Taylor & Francis Group, CRC Press, Balkema book, 2019 [https://doi.org/10.1201/ 9780429057618].
DOI: https://doi.org/10.1201/9780429057618
Google Scholar
Zhang Z. et al.: Intra-cavity second harmonic generation with Nd:YVO4/BIBO laser at 542 nm. Optics Communications 267, 2006, 487–490.
DOI: https://doi.org/10.1016/j.optcom.2006.06.033
Google Scholar
Authors
Mikhaylo VasnetsovInstitute of Physics of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0000-0002-8634-4896
Authors
Valeriy VoytsekhovichInstitute of Physics of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0000-0002-7196-729X
Authors
Vladislav PonevchinskyInstitute of Physics of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0009-0003-7250-3619
Authors
Nataliia Kachalova1Institute of Physics of the National Academy of Sciences of Ukraine; 2L.M. Litvinenko Institute of Physical and Organic Chemistry and Carbon Chemistry of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0000-0002-9956-5380
Authors
Alina KhodkoInstitute of Physics of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0000-0001-5685-1013
Authors
Oleksanr MamutaInstitute of Physics of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0000-0002-6404-5879
Authors
Volodymyr Pavlovmachinehead6926@gmail.com
Vinnitsia National Technical University Ukraine
https://orcid.org/0000-0002-0717-7082
Authors
Vadym KhomenkoInstitute of Physics of the National Academy of Sciences of Ukraine Ukraine
https://orcid.org/0000-0002-7926-9277
Authors
Natalia ManichevaOdessа Polytechnic National University Ukraine
https://orcid.org/0000-0002-3043-5342
Statistics
Abstract views: 151PDF downloads: 158
Most read articles by the same author(s)
- Valerіi Kryvonosov, Oleg Avrunin, Serhii Sander, Volodymyr Pavlov, Liliia Martyniuk, Bagashar Zhumazhanov, A USAGE OF THE IMPEDANCE METHOD FOR DETECTING CIRCULATORY DISORDERS TO DETERMINE THE DEGREE OF LIMB ISCHEMIA , Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska: Vol. 13 No. 4 (2023)
