Fresnel lens solar concentrator design and spectral distribution on focus surface

Shen, Zuo Chun; Lu, Yu; Lu, Jiangang

doi:10.1007/s10043-011-0076-1

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…If the concentrated solar can be applied to the side of the laser rod, the energy distribution in the focus of the Fresnel lens is uniform, which is helpful to obtain maximum absorbing power density to pump laser media. If the concentrated solar should be applied to the end of the laser rod, the pumping light on focal spot should be fixed with Nd:YAG rod of diameter 5mm [9]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Solar Pumped Nd:YAG Laser by the Fresnel Lens

Fang

Wang

et al. 2013

KEM

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Shortly after the invention of the laser, researchers began to dream of converting sunlight into laser radiation directly. A direct conversion of concentrated solar light into a coherent laser beam improved the conversion efficiency because of the simple design of the structure, which is an innovation in the new field of solar energy utilization. We utilize the Fresnel lens of 1m2 to collect solar light, which is coupled into the conical chamber pumping Nd:YAG crystal, in 5mm-diameter 80mm-length rod. The pumping cavity is designed to combine end-pumping with side-pumping, in which the pumping light comes from many directions. It could compensate the drawbacks of single end-pumping or side-pumping. In the experiment, we obtain the maximum laser output power of 2.5 W, with a slope efficiency achieving 1.3%. By the Tracepro ray-tracing software, simulating the incoming energy distribution in the focus of the Fresnel lens, the concentration ratio of 104 is achieved.

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Section: Resultsmentioning

confidence: 99%

Solar Pumped Nd:YAG Laser by the Fresnel Lens

Fang

Wang

et al. 2013

KEM

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“…The calculation method and results of θ BL and d BL have been given in our work. 6 According to the traditional geometrical optics theory, the refraction of light can be accurately described by simulation; therefore, the optical characteristics of Fresnel lens can be analyzed by the way of ray tracing. The physical model used is as follows:…”

Section: The Design Of Convex Fresnel Lens Image Condenser Systementioning

confidence: 99%

Spectral distribution of Xe lamp focused by Fresnel lens on focal plane and design of Fresnel lens for solar-pumped Cr/Nd:YAG ceramic

Shen

Zhou

2013

J. Opt. Technol.

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It is necessary to analyze the spectral distribution of sunlight on focal spot, because the spectrum at the focusing spot is different with the solar spectrum, as is proved by experiment. The spectral spatial distribution on the focal plane is consistent; therefore it can be used for calculating absorption efficiency of any shape laser medium pumped by Fresnel lens. Based on the absorption spectrum of Cr/Nd:YAG ceramic, this paper studies the convex Fresnel lens focus solar light. Meanwhile, Fresnel lens for the purpose of image projection is contrasted with highly concentrating Fresnel lens. By way of simulation, the maximum absorbing power density of 6 designs, based on the purpose of obtaining the maximum power density, is 279.2 W∕cm 2 , which is 3%-16% higher than absorbing power density based on the purpose of image projection.

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“…The references mentioned here are just a few examples from the literature [6][7][8]. However, these configurations and algorithms are too simple to cover a wider range of design requirements.…”

Section: Introductionmentioning

confidence: 99%

Fresnel-like prism structure generating algorithm on a curved surface with iterative and noniterative forms

Ou¹

2012

J. Opt. Soc. Am. A

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A Fresnel-like structure is required for various kinds of applications, such as contact lenses in the biomedical field, solar concentrators in the energy industry, wave-front correctors for display technology, and beam shaping for illumination systems. In this report, the author provides a simple iterative algorithm that can generate prism structures on arbitrary curved surfaces in an analytical form. Using this algorithm, a spreadsheet program can easily generate the profile of prism structures for optical software simulation. Moreover, a noniterative formulation is derived in order to reduce the design procedures. Comparisons between iterative and noniterative formulations prove the feasibility and robustness of the present approach.

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Fresnel lens solar concentrator design and spectral distribution on focus surface

Cited by 8 publications

References 8 publications

Solar Pumped Nd:YAG Laser by the Fresnel Lens

Solar Pumped Nd:YAG Laser by the Fresnel Lens

Spectral distribution of Xe lamp focused by Fresnel lens on focal plane and design of Fresnel lens for solar-pumped Cr/Nd:YAG ceramic

Fresnel-like prism structure generating algorithm on a curved surface with iterative and noniterative forms

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