Laser technologies in micro-optics. Part 1. Fabrication of diffractive optical elements and photomasks with amplitude transmission

Veiko, Vadim P.; Korolkov, V. P.; Полещук, А. Г.; Sinev, D. A.; Shakhno, E. A.

doi:10.3103/s8756699017050077

Cited by 22 publications

(11 citation statements)

References 10 publications

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“…Каждый такой треугольник можно спроецировать на поверхность голограммы и создать на его поверхности дифракционную решётку тоже по (1,2). Эшелетт при таких маленьких периодах решётки создавать трудно, хотя начальные шаги в этом направлении уже ведутся [23,24,25]. Подготовка технологии записи голографических решёток, приведённых на рис.…”

Section: запись голограмм и объективные измерения их структурыunclassified

Holograms of a 3D object synthesized at the receiving end of the communication channel in Dot Matrix technology

Shoydin¹,

Pazoev²,

Smyk

et al. 2022

Computer Optics

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The manuscript presents experimental results on the recording and restoration of 3D holographic frames suitable for transmitting 3D holographic images with the frame rate required for TV images and the resolution of the Full HD standard and higher. The method is based on the previously proposed technology for recording and transmitting a depth map and surface texture of the holographic object over the communication channel and digital synthesis of the hologram at the receiving end of the communication channel. The obtained result reduces the frequency band required for the transmission of 3D holographic information, similar to SSB technology, since the carrier spatial frequency of the hologram in this method is not transmitted through the communication channel, but is synthesized in the hologram already at its receiving end. Experimental results of hologram synthesis at the receiving end of the communication channel in DotMatrix technology are presented. The method considered in this manuscript is convenient for multiplexing 3D images, transferring them from one part of the electromagnetic spectrum to another, as well as for creating hyperspectral images. The work implements the technology of a holographic phototelegraph, which, when using high-speed dynamic holographic monitors, can solve the problems of creating 3D TV and augmented reality.

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Section: запись голограмм и объективные измерения их структурыunclassified

Holograms of a 3D object synthesized at the receiving end of the communication channel in Dot Matrix technology

Shoydin¹,

Pazoev²,

Smyk

et al. 2022

Computer Optics

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“…The algorithm for calculating the required parameters was built based on Equations (1)-(3) above. The temperature distribution on the metallic film surface during a complete j-th pulse (consisting of the heating and cooling phases) as a function of the absorptance can be determined from Equation (2). From that based on the solution of Equation (1) by Libenson [35], one could easily calculate the oxide layer thickness formed by high-temperature oxidation, and the oxide layer thickness is considered as the total thickness of the previously formed oxide layers and the newly formed oxide layer after the j-th pulse.…”

Section: Simulation Proceduresmentioning

confidence: 99%

“…Micro and nanotopologies on thin films provide unique possibilities for photonic needs [ 1 ] to fabricate diffractive optical elements (DOEs) [ 2 ], metalenses [ 3 ], nanoantenna arrays [ 4 , 5 , 6 , 7 ], etc. The listed applications set requirements for the manufacturing process of each surface element, namely, the shape, size, composition, and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Laser Thermochemical High-Contrast Recording on Thin Metal Films

et al. 2020

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Laser-induced thermochemical recording of nano- and microsized structures on thin films has attracted intense interest over the last few decades due to essential applications in the photonics industry. Nevertheless, the relationship between the laser parameters and the properties of the formed oxide structures, both geometrical and optical, is still implicit. In this work, direct laser interference patterning of the titanium (Ti) film in the oxidative regime was applied to form submicron periodical structures. Depending on the number of laser pulses, the regime of high contrast structures recording was observed with the maximum achievable thickness of the oxide layer. The investigation revealed high transmittance of the formed oxide layers, i.e., the contrast of recorded structures reached up to 90% in the visible range. To analyze the experimental results obtained, a theoretical model was developed based on calculations of the oxide formation dynamics. The model operates on Wagner oxidation law and the corresponding optical properties of the oxide–metal–glass substrate system changing nonlinearly after each pulse. A good agreement of the experimental results with the modeling estimations allowed us to extend the model application to other metals, specifically to those with optically transparent oxides, such as zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), and tantalum (Ta). The performed analysis highlighted the importance of choosing the correct laser parameters due to the complexity and nonlinearity of optical, thermal, and chemical processes in the metal film during its laser-induced oxidation in the air. The developed model allowed selecting the suitable temporal–energetic regimes and predicting the optical characteristics of the structures formed with an accuracy of 10%. The results are promising in terms of their implementation in the photonics industry for the production of optical converters.

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“…3 Over the years, the efficiency of DOEs' design algorithms have been increased, 4 while fabrication methods are still under continuous study. 5 Respect to design techniques, Gerchberg-Saxton algorithm is commonly used. It is a bidirectional iterative method which is used under far-field conditions and presents a high performance.…”

Section: Introductionmentioning

confidence: 99%

Fabrication effects in the optical performance of DOEs engraved with femtosecond lasers

Soria-García

Fantova²,

Blas³

et al. 2021

Optical Fabrication, Testing, and Metrology VII

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The development of DOEs fabrication techniques is continuously growing due to the wide range of industrial applications, such as beam manipulation or optical position encoders. In this work, we use Femtosecond laser direct writing to manufacture DOEs, which uses a simpler and more efficient way to fabricate amplitude binary masks. Also, we have analyzed the performance of the DOEs. The fabrication technique is validated since the experimental results are in accordance to numerical simulations.

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Laser technologies in micro-optics. Part 1. Fabrication of diffractive optical elements and photomasks with amplitude transmission

Cited by 22 publications

References 10 publications

Holograms of a 3D object synthesized at the receiving end of the communication channel in Dot Matrix technology

Holograms of a 3D object synthesized at the receiving end of the communication channel in Dot Matrix technology

Laser Thermochemical High-Contrast Recording on Thin Metal Films

Fabrication effects in the optical performance of DOEs engraved with femtosecond lasers

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