Advances in Digital Holographic Interferometry

Петров, В. М.; Pogoda, A. P.; Sementin, V. V.; Sevryugin, Alexander; Shalymov, Egor V.; Venediktov, Dmitrii; Venediktov, Vladimir

doi:10.3390/jimaging8070196

Cited by 13 publications

(4 citation statements)

References 91 publications

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“…According to 2022 publications, digital holography continues to develop and be widely implemented (Ana Carpio, 2022;Tatsuki Tahara, Yaping Zhang, Joseph Rosen & Ting-Chung Poo., 2022;Jia Hao Liu & Haoran Meng, 2022;Viktor Petrov, Anastsiya Pogoda, Vladimir Sementin & Vladimir Venediktov, 2022 Pellizzari, 2022;Jian Zhao & Yuzhuo Wang, 2022;Saoucene Hassad, Kouider Ferria, Larbi Bouamama & Pascal Picart, 2022;Meihua Liao, Yuliu Feng, Dajiang Lu & Wenqi He, 2022). They learned to obtain spectrograms by rotating the hologram relative to the incident radiation by a certain angle.…”

Section: Digitalmentioning

confidence: 99%

Cryptos Control of Humanoid Intelligent Digital Twin Based on Spectral and Holographic Approaches

Bryndin

2023

JPEPS

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A person perceives his environment through the influence of various complexes of conjugated vibrations on the eyes, ears and other sensitive components of the body. The psyche and neural systems of a person form the impression of vibration impact. The mind creates a language equivalent and connects it with the impression that has formed. Communication links are formed between impressions and language equivalents. Live vibrational information involves a person in a communicative creative process. In the creative communicative process, human intelligence develops. The combination of modern interdisciplinary technologies can contribute to the creation of an intelligent digital twin, similar to humans on spectral and holographic principles, relying on achievements in the field of artificial intelligence. The digital twin fixes the effects of the environment in the form of a spectrogram, and stores the effect result in the form of a hologram. Multilayer neural network systems with additional training work with spectra and holograms and their communications. Language communications are associated with spectra, holograms and their communications. A humanoid digital twin with an ensemble of intellectual agents will be able to form and develop intelligence in interaction with similar digital twins and people.

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Section: Digitalmentioning

confidence: 99%

Cryptos Control of Humanoid Intelligent Digital Twin Based on Spectral and Holographic Approaches

Bryndin

2023

JPEPS

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“…This became possible due to the development of optical-digital methods of image registration and processing. At present, digital holography is widely used in medicine [3][4][5], biology [6][7][8][9], ecology [10,11], metrology [6,12], astronomy [13] and other fields. A digital hologram is an interference pattern registered from reference and object beams coherent with each other.…”

Section: Introductionmentioning

confidence: 99%

HoloForkNet: Digital Hologram Reconstruction via Multibranch Neural Network

et al. 2023

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Reconstruction of 3D scenes from digital holograms is an important task in different areas of science, such as biology, medicine, ecology, etc. A lot of parameters, such as the object’s shape, number, position, rate and density, can be extracted. However, reconstruction of off-axis and especially inline holograms can be challenging due to the presence of optical noise, zero-order image and twin image. We have used a deep-multibranch neural network model, which we call HoloForkNet, to reconstruct different 2D sections of a 3D scene from a single inline hologram. This paper describes the proposed method and analyzes its performance for different types of objects. Both computer-generated and optically registered digital holograms with resolutions up to 2048 × 2048 pixels were reconstructed. High-quality image reconstruction for scenes consisting of up to eight planes was achieved. The average structural similarity index (SSIM) for 3D test scenes with eight object planes was 0.94. The HoloForkNet can be used to reconstruct 3D scenes consisting of micro- and macro-objects.

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“…A VECSEL can employ multiple gain chips to generate two or more wavelengths in the co-axial cavity, and produce mid-infrared and terahertz band outputs through difference frequencies or sum frequencies [16,17]. Optical position meter, holographic interferometry, anti-interference lidar and other applications also require dual-wavelengthoutput light sources [18][19][20]. The rational design of quantum wells in VECSEL gain chips can enable dual-wavelength output of a single chip by using the two-component quantum wells or combining the single-component quantum wells with the gain-detuned cavity design [21,22].…”

Section: Introductionmentioning

confidence: 99%

Single-Chip Switchable Dual-Wavelength Vertical External-Cavity Surface-Emitting Laser

Zhang,

et al. 2023

Crystals

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Dual-wavelength output devices have a wide range of applications in mid-infrared band difference frequency generation, anti-interference lidar, dual-wavelength holographic interferometry, and other applications. Vertical external cavity surface-emitting lasers (VECSELs) are a type of semiconductor laser that can achieve single-chip dual-wavelength output by designing the chip structure. In this paper, we present a single-chip VECSEL that can switch between dual-wavelength and single-wavelength output modes. The VECSEL can simultaneously emit coaxial laser beams at 967 nm and 1013 nm, with a wavelength spacing of about 45 nm. The degree of mismatch between the gain peaks of the two quantum wells in the gain chip and the corresponding cavity modes is different. By adjusting the pump power, the temperature of the active region can be changed, which alters the matching relationship between the gain peaks and the cavity modes and controls the output mode of the VECSEL. The dual-wavelength output mode maintains a stable wavelength spacing at different operating temperatures. The laser output mode can be switched between single-wavelength and dual-wavelength, and the beam divergence angle is less than 8°. The dual-wavelength output power can exceed 400 mW, and the long-wavelength output power can reach up to 700 mW.

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Advances in Digital Holographic Interferometry

Cited by 13 publications

References 91 publications

Cryptos Control of Humanoid Intelligent Digital Twin Based on Spectral and Holographic Approaches

Cryptos Control of Humanoid Intelligent Digital Twin Based on Spectral and Holographic Approaches

HoloForkNet: Digital Hologram Reconstruction via Multibranch Neural Network

Single-Chip Switchable Dual-Wavelength Vertical External-Cavity Surface-Emitting Laser

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