Iterative algorithms for off-axis double-phase computer-generated holograms implemented with phase-only spatial light modulators

Kuzmenko, Alexander V.; Yezhov, Pavel V.

doi:10.1364/ao.46.007392

Cited by 12 publications

(8 citation statements)

References 9 publications

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“…Applications of these commercially available SLMs are becoming increasingly important, due to their ability to fulfill the requirements in terms of speed, modulation capability, and resolution. The applications of SLMs are numerous, for example, recent papers have reported different application such as pulse shaping [166], quantum key distribution [167], hologram reconstruction [168], computer generated holograms [169], diffractive optical elements [170], optical tweezers [171], optical metrology [172], joint transform correlation [173], and ultrasound detection [174].…”

Section: Research Done In the Field Of Optical Computing Based On Optmentioning

confidence: 99%

Optical bistability in mesoporous silicon microcavity resonators

Pham

Qiao

Guan

et al. 2011

Journal of Applied Physics

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Porous silicon (PSi) has been shown to be a material with varieties of nonlinear optical properties. These properties have been discussed in terms of its nature of photoluminescence mechanism such as quantum confinement, surface states and the role of impurities. PSi has also been shown to be a useful material for optical devices, and have potential applications in fields such as bio-sensing and efficient lighting. In the following thesis, I present my theoretical and experimental results in studying a nonlinear optical property, known as optical bistability, in mesoporous silicon microcavity devices. The results show significant optical hysteresis in the transmission and reflection properties of mesoporous silicon microcavities when illuminated with a 150 nanosecond pulsed laser at 532 nm. The optical hysteresis is shown to be transient in nature and the properties are strongly dependent on the porosity of the cavity layer. The onset and damage threshold intensity are also shown to be porosity dependent. Modeling suggests that the observed effects are due to changes in the nonlinear refractive index and the transient lifetime increases with increasing porosity. The role of surface states was also investigated on influencing the bistable process by passivating the internal porous surface with hydrosilylation chemistry. The role of the number of periods in the cavity structure is also studied. The cavity is doped with quantum dot to improve its switching intensity. The optical bistable property of the cavity was also investigated by using a 532 nm continuous wave (CW) laser with maximum power of 10 mW, modulated by an optical chopper. The only sample that yields significant hysteresis is the sample doped with quantum dot, with millisecond respone time. The results show that the sample doped with quantum dot shows both electronic and thermal process in forming optical hysteresis. Finally, I develop a theoretical model to study the transient hysteresis shape. The model suggests that the power and pulse width of the excitation laser source strongly influence the shaping of the bistable curves. The nature of the nonlinear refractive index is also quantified in terms of the power and the width of the excitation pulse. The third order nonlinear coefficient is calculated to be in the order of 10-10 esu while the passivated samples yield results in the order of 10-9 esu, which agree with previous findings in literature.

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Section: Research Done In the Field Of Optical Computing Based On Optmentioning

confidence: 99%

Optical bistability in mesoporous silicon microcavity resonators

Pham

Qiao

Guan

et al. 2011

Journal of Applied Physics

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“…SLMs such as microelectromechanical systems (MEMSs) [3][4][5][6][7][8] and liquid crystal on silicon (LCoS) [9][10][11][12][13] devices are widely used in holographic display systems. [19][20][21][22][23] Commercial LCoS microdisplays that feature phase-only modulation are extensively used as the phasetype SLM for studying the holographic 3-D display. In addition, the wavefront can be adjusted in digital form to facilitate the hologram reconstruction.…”

Section: Introductionmentioning

confidence: 99%

Image formation of holographic three-dimensional display based on spatial light modulator in paraxial optical systems

Lin

et al. 2015

J. Micro/Nanolith. MEMS MOEMS

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This work describes the image formation and properties of holographic three-dimensional (3-D) display based on spatial light modulators (SLMs) combined with optical imaging systems. Existing pixelated SLMs with periodic mesh structures affect the holographic reconstruction and display properties. According to a holographic 3-D display architecture based on SLM in paraxial optical systems, this study applied the ray matrix optics and scalar diffraction theory to regard the light wave emitting from the holographic plane to the image plane as an optical system composed of four matrix elements. The image quality and depth of field (DOF) of the holographic 3-D display system are investigated, and the relationship between the impulse response and the matrix elements of the holographic imaging system is derived. In addition, the imaging properties and DOF are explored and verified through optical experimentation.

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“…However they calculate amplitude type holograms, not phase-only holograms. Most of the generation algorithms for phase-only holograms are iterative [5,6,7]. We are not aware of any algorithm that generates phase-only holograms in real-time.…”

Section: Introductionmentioning

confidence: 99%

Real-time color holographic video display system

Yaraş

Kang

Onural

2009

2009 3DTV Conference: The True Vision - Capture, Transmission and Display of 3D Video

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A real-time multi-GPU color holographic video display system computes holograms from 3D video of a rigid object. System has three main stages; client, server and optics. 3D coordinate and texture information are kept in client and sent online to the server through the network. In the server stage, with the help of the parallel processing ability of the GPUs and segmentation algorithms, phase-holograms are computed in real-time. The graphic card of the server computer drives the SLMs and red, green and blue channels are controlled in parallel. Resultant color holographic video is loaded to the SLMs which are illuminated by expanded light from LEDs. In the optics stage, reconstructed color components are combined by using beam splitters. Reconstructions are captured by a CCD array without any supporting optics. Experimental results are satisfactory.

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Iterative algorithms for off-axis double-phase computer-generated holograms implemented with phase-only spatial light modulators

Cited by 12 publications

References 9 publications

Optical bistability in mesoporous silicon microcavity resonators

Optical bistability in mesoporous silicon microcavity resonators

Image formation of holographic three-dimensional display based on spatial light modulator in paraxial optical systems

Real-time color holographic video display system

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