Wavelength Response Analysis and Optimization of Photopolymer Volume Holographic Elements for Solar Energy Applications

Sam, T. L. Shaji; Kumar, P. T. Ajith

doi:10.1007/978-981-10-3908-9_17

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…In 2017, Shaji Sam et al, developed the optimization of an HL for solar applications using an off-axis geometry, in registering the interference of a spherical wave acting as the object with a plane wave generated by the reference beam. For HL recording they used a 639 nm red laser with an intensity of 2 mW/cm 2 , which allowed them to optimize the HL, resulting in a diffraction efficiency of 91% with a photopolymer thickness of 16

m [ 84 ].…”

Section: Photopolymers Used In Hls For Concentrating Solar Spectrum A...mentioning

confidence: 99%

“… Outline of the results obtained so far for HSCs as a function of the photopolymers and strategies used [ 72 , 73 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 102 , 103 ]. …”

Section: Figurementioning

confidence: 99%

“… Outline of the different strategies used to optimize the most important parameters in the design of holographic solar concentrators. DE: diffraction efficiency, AA: acceptance angle [ 72 , 73 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 102 , 103 ]. …”

Section: Figurementioning

confidence: 99%

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Photopolymer Holographic Lenses for Solar Energy Applications: A Review

Alfaro,

Lloret,

Vilardy

et al. 2024

Polymers

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Holographic lenses (HLs) are part of holographic optical elements (HOE), and are being applied to concentrate solar energy on a focal point or focal line. In this way, the concentrated energy can be converted into electrical or thermal energy by means of a photovoltaic cell or a thermal absorber tube. HLs are able to passively track the apparent motion of the sun with a high acceptance angle, allowing tracking motors to be replaced, thus reducing the cost of support structures. This article focuses on a review of the materials used in the recording of a holographic lens (HL) or multiple HLs in photovoltaic and/or concentrating solar collectors. This review shows that the use of photopolymers for the recording of HLs enables high-performance efficiency in physical systems designed for energy transformation, and presents some important elements to be taken into account for future designs, especially those related to the characteristics of the HL recording materials. Finally, the article outlines future recommendations, emphasizing potential research opportunities and challenges for researchers entering the field of HL-based concentrating solar photovoltaic and/or concentrating solar thermal collectors.

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m [ 84 ].…”

Section: Photopolymers Used In Hls For Concentrating Solar Spectrum A...mentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Photopolymer Holographic Lenses for Solar Energy Applications: A Review

Alfaro,

Lloret,

Vilardy

et al. 2024

Polymers

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Wide-Band High Concentration-Ratio Volume-Holographic Grating for Solar Concentration

Wang

Kao

et al. 2020

Sensors

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Efficient and low-cost solar-energy collection has become the focus of many research works. This paper proposes a recording method and an experimental verification of a wide-band, large-angle, and high concentration-ratio volume-holographic grating for solar concentration. We applied the Kogelnik coupled-wave theory and photopolymer diffusion model to analyse the formation mechanism and influencing factors on the diffraction efficiency of monochromatic volume-holographic gratings. We design and construct a three-color laser-interference system to record three monochromatic volume-holographic gratings. The best recording conditions are determined by experiment and simulation. A trichromatic volume-holographic grating is obtained by gluing the three monochromatic gratings together. The experimental results show that the trichromatic volume-holographic grating with a working angle of 6.7° and a working band of visible light has a light concentration ratio of 149.2 under an illumination of the combined recorded three-color beams, and that under sunlight is 27.2. We find that the proposed trichromatic volume-holographic grating for light concentration offers the advantages of wide band and high light concentration ratio, which provide a reference for solar concentration.

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Wavelength Response Analysis and Optimization of Photopolymer Volume Holographic Elements for Solar Energy Applications

Cited by 2 publications

References 3 publications

Photopolymer Holographic Lenses for Solar Energy Applications: A Review

Photopolymer Holographic Lenses for Solar Energy Applications: A Review

Wide-Band High Concentration-Ratio Volume-Holographic Grating for Solar Concentration

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