December 2021
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16 Reads
Optics and Spectroscopy
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Publications (139)
December 2021
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6 Reads
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2 Citations
Optics and Spectroscopy
December 2021
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69 Reads
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4 Citations
The paper 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 a resolution of the Full HD standard and higher. The Patent RF No. 2707582 proposed a method for compressing holographic information and transmitting it using a procedure similar to SSB over conventional communication channels. In this work, the holographic information of a 3D portrait of a person, transmitted and received via the Wi-Fi communication channel, was restored in the form of a rainbow hologram, as one of a variety of holograms, by the computer addition of the carrier spatial frequency, and then hologram was actually produced on a photoresist. This technology can be used to create a holographic phototelegraph or, if there is a dynamic holographic display, to create a holographic television and 3D augmented reality.
June 2021
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202 Reads
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14 Citations
Diffraction waveguides are widely used in augmented reality devices as information display systems for the introduction of data into the human visual field in order to supplement information about the world around us. This paper formulates the principles of radiation conversion in diffraction waveguides made of photo-thermo-refractive glass on the basis of multiplexed volume holographic gratings, and the advantages and disadvantages of high spectral-angular selectivity are analyzed. In the optical scheme, each of the superimposed volume holographic gratings in the diffraction waveguide forms a corresponding part of the composite angular field of view of the augmented reality device. A proposed mathematical model based on angular multiplexing made it possible to synthesize the diffraction optical element for a new type of diffraction waveguide made from photo-thermo-refractive glass and to create a prototype with an angular resolution of at least 3.0 ± 0.5′, with a brightness change in the image of less than 20% and with a composite angular field of view of 32°.
April 2021
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13 Reads
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2 Citations
January 2021
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12 Reads
Multiplexed volume holographic gratings are used as spectral and angular optical couplers for augmented reality displays and high-power laser applications. Paper presents modeling approach and recording experiments to create couplers in photo-thermo-refractive glass.
December 2020
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2,689 Reads
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91 Citations
November 2020
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45 Reads
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5 Citations
This paper describes the experiment on multiplexing recording using a phase mask to create augmented reality waveguides. The study is distinguished by the application of photo-thermo-refractive glass as both holographic and substrate materials. The presented approach allows us to obtain the diffraction efficiency above 15% in each of the multiplexed gratings for sevenfold recording. The images output with the manufactured planar waveguide prototype are presented.
October 2020
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227 Reads
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10 Citations
The paper describes a stable method for multiplexed recording of the Bragg diffraction gratings for waveguides using a phase mask. Diffraction waveguides in this experiment were made of photo-thermo-refractive glass. Two types of the phase mask are considered: surface and volume. Their comparison is based on diffraction characteristics of manufactured single and multiplexed Bragg gratings. The experimental results showed the advantage of surface phase mask application. To confirm the efficiency of the proposed method, diffraction waveguides was successfully fabricated and integrated in see-through near-eye display.
August 2020
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148 Reads
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15 Citations
All of the existing holographic wavefront sensors are either bulky or have low accuracy of measuring wavefront aberrations. In this paper, we present an improvement of the holographic method of measuring wavefront aberrations using computer-generated Fourier holograms. The novelty of this work lies in the proposed approach to the synthesis of Fourier holograms, which are implemented using phase-only SLM. The main advantages of this method are the increased diffraction efficiency compared to the previously known methods, and the more compact implementation scheme due to the elimination of the conventional Fourier-lens. The efficiency of the proposed method was confirmed by numerical simulation and optical experiments.
Citations (65)
... Another alternative application of CGH is the offered method for photopolymer security holograms individualization [26]. The method consists of recording an extra computer-generated micro-hologram containing a hidden coded image with individual data in a small area of the photopolymer material. ...
- Citing Article
December 2021
Optics and Spectroscopy
... When the positions of the 3D objects change, the camera array needs to be re-calibrated. Some researchers use the Kinect device to record the real object [11][12][13][14], and the fast hologram calculation system using multiple RGB cameras to capture the moving scenes is also proposed [15]. Besides, the depth extraction method for 2D image is proposed [16]. ...
- Citing Article
- Full-text available
December 2021
... As another predominant approach for AR optical waveguides, the diffractive optical waveguide relies on diffractive couplers. Four primary types of diffractive couplers have been developed and are widely recognized: surface-relief gratings (SRGs) [12][13][14][15][16][17], volume holographic gratings (VHGs) [18][19][20][21][22][23][24], polarization volume gratings (PVGs) [25], and metasurface couplers [26]. SRGs and VHGs have been extensively integrated into commercial AR products, including HoloLens, Vuzix, Magic Leap, WaveOptics, Dispelix, DigiLens, and others [27][28][29]. ...
- Citing Article
- Full-text available
June 2021
... Оптоволоконные датчики на основе ВБР, встроенные в композитные структуры. Анализ тенденций развития материалов в мире показывает, что одним из наиболее актуальных направлений развития современного материаловедения является концепция создания интеллектуальных материалов (ИМ) и конструкций на их основе, обладающих комплексом функций, обеспечивающих своевременную реакцию на изменение условий окружающей среды и внешние воздействия [8,9]. Создание ИМ стало возможным благодаря бурному развитию информационных технологий и сенсорной техники. ...
- Citing Conference Paper
April 2021
... Finally, the optimization model based on augmented reality and 5G communication technology is used to analyze and predict the relevant characteristic data of university art design, so as to verify the accuracy of the model. e research results can provide support for the application of augmented reality and 5G communication technology in other art fields. of the problems existing in the process of image output, Shishova et al. [6] proposed an optimization model based on augmented reality theory. In this model, feature parameters were extracted from the image to obtain the corresponding optimization data, and the optimal solution of the corresponding graph was obtained through calculation. ...
- Citing Article
- Publisher preview available
November 2020
... Terahertz holography is uniquely positioned within the family of coherent imaging techniques. While digital holography [5] is well-established at optical wavelengths [6], its application in the THz range remains limited. Optical setups designed for the THz range of radiation are prone to significant diffraction effects and the undesirable impact of limited optical element apertures, which are more pronounced compared to the visible range. ...
- Citing Article
- Full-text available
December 2020
... The exposure energy and chemical developing times were analysed in order to achieve high diffraction efficiency panchromatic multiplexed VPG [45][46][47][48]. The optimized exposing energy of the panchromatic emulsion is 160µJ/cm 2 for red (632.8 ...
- Citing Article
- Full-text available
October 2020
... В настоящей работе в голографическом ДВФ предлагается использовать голограмму, обладающую свойствами инвариантности к изменению длины волны анализируемого излучения для анализа квазимонохроматического и полихроматического светового поля. На основе представленной ранее схемы реализации голографического датчика волнового фронта (рис. 1, b) [29,30] за, будет осуществляться апробация синтезированных пространственно-спектральных фильтров в виде компьютерно синтезированных голограмм (КСГ) Фурье. ...
- Citing Article
- Full-text available
August 2020
... Single coherent beam illuminates the phase mask and forms superimposing beams in the diffraction orders, the phase mask gets replicated to the thick-layer holographic material. This method is also called holographic or optical replication [13,14], especially if the recording laser wavelength during the replication is the same as when recording the phase mask. Radiation with the wavelength of 0.325 µm (He-Cd laser 1) is expanded and collimated using lenses 2 и3 as a telescopic Kepler system. ...
- Citing Article
- Full-text available
July 2020
Quantum Electronics
... Сегодня при решении задач по детектированию аберраций комплексной амплитуды поля в различных областях физики широко применяются датчики волнового фронта (ДВФ) [13]. К таким устройствам можно отнести широко известные датчики Гартмана [14] и Шака-Гартмана (ДШГ) [15,16], датчики кривизны [17], пирамидальные датчики [18], а также голографические ДВФ [19][20][21]. Принцип работы представленных датчиков, за исключением голографических, основывается на анализе распределения интенсивности некоторого изображения или набора изображений при помощи матричного приемника излучения (МПИ). ...
- Citing Article
July 2020
Quantum Electronics
