Dynamic Holographic Display Based on Perovskite Nanocrystal Doped Liquid Crystal Film

Wu, Zhongen; Zhou, Xiaowen; Wu, Shang; Yan, Zekun; Li, Yan; He, Gufeng

doi:10.1109/jphot.2021.3121266

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…Various physical dimension, such as time 11 , polarization 12−16 , wavelength 17 and spatial or angle posi-tion 18,19 , has been employed as independent information channels 20,21 . Such optically multiplexing holography supports high-capacity holographic information processing which can find applications in optical encryption 22 , color display 23 and dynamic display 24 . Among these applications, information channels play significant roles.…”

Section: Introductionmentioning

confidence: 99%

100 Hertz frame-rate switching three-dimensional orbital angular momentum multiplexing holography via cross convolution

Meng¹,

Hua²,

Cheng³

et al. 2022

OES

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The orbital angular momentum (OAM) of light has been implemented as an information carrier in OAM holography. Holographic information can be multiplexed in theoretical unbounded OAM channels, promoting the applications of optically addressable dynamic display and high-security optical encryption. However, the frame-rate of the dynamic extraction of the information reconstruction process in OAM holography is physically determined by the switching speed of the incident OAM states, which is currently below 30 Hz limited by refreshing rate of the phase-modulation spatial light modulator (SLM). Here, based on a cross convolution with the spatial frequency of the OAM-multiplexing hologram, the spatial frequencies of an elaborately-designed amplitude distribution, namely amplitude decoding key, has been adopted for the extraction of three-dimensional holographic information encoded in a specific OAM information channel. We experimentally demonstrated a dynamic extraction frame rate of 100 Hz from an OAM multiplexing hologram with 10 information channels indicated by individual OAM values from -50 to 50. The new concept of cross convolution theorem can even provide the potential of parallel reproduction and distribution of information encoded in many OAM channels at various positions which boosts the capacity of information processing far beyond the traditional decoding methods. Thus, our results provide a holographic paradigm for high-speed 3D information processing, paving an unprecedented way to achieve the high-capacity short-range optical communication system.

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Section: Introductionmentioning

confidence: 99%

100 Hertz frame-rate switching three-dimensional orbital angular momentum multiplexing holography via cross convolution

Meng¹,

Hua²,

Cheng³

et al. 2022

OES

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“…Organic-inorganic hybrid lead halide perovskite ABX 3 (A = MA; methylammonium, FA; formamidinium, B = Pb, X = Cl, Br, I) quantum dots (PeQDs) have greatly attracted attention as a light source for optoelectrical applications carrying the next generation such as displays for remote medicine [1], photodetectors [2], and photovoltaics [3]. This is due to their excellent optical properties such as high photoluminescence quantum yields (PLQYs; over 70%), a narrow full width at half maximum (FWHM; 25 nm or less), and color tunability adjusted by the halide components in an entire tunability (from 450 nm to 730 nm) [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Air Stability of Perovskite Quantum Dots by Manganese Passivation

Sato

Umemoto

Asakura³

et al. 2022

Technologies

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Organic-inorganic perovskite quantum dots (PeQDs) have attracted attention due to their excellent optical properties, e.g., high photoluminescence quantum yields (PLQYs; >70%), a narrow full width at half maximum (FWHM; 25 nm or less), and color tunability adjusted by the halide components in an entire tunability (from 450 nm to 730 nm). On the other hand, PeQD stability against air, humidity, and thermal conditions has still not been enough, which disturbs their application. To overcome these issues, with just a focus on the air stability, Mn2+ ion passivated perovskite quantum dots (Mn/MAPbBr3 QDs) were prepared. Mn2+ could be expected to contract the passivating layer against the air condition because the Mn2+ ion was changed to the oxidized Mn on PeQDs under the air conditions. In this research, Mn/MAPbBr3 QDs were successfully prepared by ligand-assisted reprecipitation (LARP) methods. Surprisingly, Mn/MAPbBr3 QD films showed more than double PLQY stability over 4 months compared with pure MAPbBr3 ones against the air, which suggested that oxidized Mn worked as a passivating layer. Improving the PeQD stability is significantly critical for their application.

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“…Reactive mesogens (RMs), which are a polymerizable liquid crystal (LC) containing a reactive end group, [ 1,2 ] are a highly useful material for the fabrication of polymer nano‐ or microstructures with anisotropic molecular ordering [ 3 ] because of their two unique features: liquid crystalline assembly and photopolymerizable property. The crafted microstructure films with a pre‐designed arrangement of the anisotropic refractive index profile exhibit excellent potential in controlling the propagation direction, [ 4 ] wavelength, [ 5 ] polarization, [ 6 ] phase front, [ 7 ] and fluorescence of light, [ 8,9 ] and have been used to drive remarkable advances in various photonic devices, such as displays, [ 2,10 ] holographic devices, [ 11 ] and lenses. [ 12–14 ] Nevertheless, as a photonic microstructure platform, the enormous potential of polymerized LC films has not been fully exploited; for example, a high transmission polarizer beyond the theoretical maximum value [ 6 ] can be a next innovative photonic application using polymerized LCs.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Double Microprism Polarizer with Microstructured Molecular Ordering

Lee

Yoon²,

Song

et al. 2022

Advanced Optical Materials

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Using crafted microstructures with complex molecular ordering has proven to be an excellent approach to control the propagation and phase front of light, and consequently, has led to remarkable advances in various photonic devices. A polarization‐conversion‐type polarizer with extraordinarily high transmittance can be another innovative photonic application that can be realized using microfabricated molecular ordering; however, the technology is still at the stage of idea generation. Here, a novel polarization conversion polarizer is demonstrated using a polymerized liquid crystalline double microprism (DMP) array and patterned retarder. A lab‐made polarizer using the method exhibits the degree of polarization of 94.5% without absorption or large reflection of light, and its transmittance is found to be ≈1.8 times higher than a dichroic sheet polarizer. In addition, the DMP polarizer works in the full spectral range of visible light and its thickness is less than 150 µm; therefore, it can be used in flat photonic devices, including displays. DMP polarizers can easily be fabricated using well‐established soft lithography and photoalignment methods. Thus, the proposed technology can open new possibilities for polymerized liquid crystal films with well‐crafted molecular ordering.

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Dynamic Holographic Display Based on Perovskite Nanocrystal Doped Liquid Crystal Film

Cited by 4 publications

References 23 publications

100 Hertz frame-rate switching three-dimensional orbital angular momentum multiplexing holography via cross convolution

100 Hertz frame-rate switching three-dimensional orbital angular momentum multiplexing holography via cross convolution

Enhanced Air Stability of Perovskite Quantum Dots by Manganese Passivation

Highly Efficient Double Microprism Polarizer with Microstructured Molecular Ordering

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