High efficiency diffractive lenses: Deduction of kinoform profile

Moreno, Vicente; Román, Juan Félix; Salgueiro, José R.

doi:10.1119/1.18587

Cited by 84 publications

(48 citation statements)

References 11 publications

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“…In this manuscript, we describe a quasi-direct space-to-time (QDST) pulse shaper consisting of a mask attached to a kinoform diffractive lens (DL) [10]. The term quasi-direct refers to a space-to-time transformation from the squared radial coordinate to time.…”

Section: Introductionmentioning

confidence: 99%

Diffractive optics for quasi-direct space-to-time pulse shaping

et al. 2008

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Abstract:The strong chromatic behavior associated with a conventional diffractive lens is fully exploited to propose a novel optical device for pulse shaping in the femtosecond regime. This device consists of two optical elements: a spatially patterned circularly symmetric mask and a kinoform diffractive lens, which are facing each other. The system performs a mapping between the spatial position of the masking function expressed in the squared radial coordinate and the temporal position in the output waveform. This space-to-time conversion occurs at the chromatic focus of the diffractive lens, and makes it possible to tailor the output central wavelength along the axial location of the output point. Inspection of the validity of our device is performed by means of computer simulations involving the generation of femtosecond optical packets.

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Section: Introductionmentioning

confidence: 99%

Diffractive optics for quasi-direct space-to-time pulse shaping

et al. 2008

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“…For a single wavelength, only the kinoform (Fig. 6) may have one focus and a theoretical diffraction efficiency of 100% [14]. The ideal kinoform looks like a Fresnel lens, composed of a multitude of zones with a constant thickness h of few microns.…”

Section: Diffractive Lensmentioning

confidence: 99%

Flat Fresnel doublets made of PMMA and PC: combining low cost production and very high concentration ratio for CPV

Languy¹,

Fleury²,

Lenaerts³

et al. 2011

Opt. Express

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Abstract:The linear chromatic aberration (LCA) of several combinations of polycarbonates (PCs) and poly (methyl methacrylates) (PMMAs) as singlet, hybrid (refractive/diffractive) lenses and doublets operating with wavelengths between 380 and 1600 nm -corresponding to a typical zone of interest of concentrated photovoltaics (CPV) -are compared. Those comparisons show that the maximum theoretical concentration factor for singlets is limited to about 1000 × at normal incidence and that hybrid lenses and refractive doublets present a smaller LCA increasing the concentration factor up to 5000 × and 2 × 10 6 respectively. A new achromatization equation more useful than the Abbé equation is also presented. Finally we determined the ideal position of the focal point as a function of the LCA and the geometric concentration which maximizes the flux on the solar cell.

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“…The relation between the value of  and the corresponding efficiency  for the generated pattern is given by [25]:…”

Section: F II Experiments Setupmentioning

confidence: 99%

Controlled Multibeam Supercontinuum Generation With a Spatial Light Modulator

Borrego-Varillas

Pérez-Vizcaíno

Mendoza-Yero

et al. 2014

IEEE Photon. Technol. Lett.

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Abstract-We report on deterministic femtosecond multifilamentation in fused silica by encoding a diffractive microlens array into a spatial light modulator. The efficiency and focal length of each microlens are modified through the addressing voltage. This allows for a precise control on the energy coupled to the filaments thus obtaining a homogenized supercontinuum pattern from an inhomogeneous irradiance input distribution. Slight changes in the focal length of the microlenses allow for independent tailoring of the supercontinuum spectra.

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High efficiency diffractive lenses: Deduction of kinoform profile

Cited by 84 publications

References 11 publications

Diffractive optics for quasi-direct space-to-time pulse shaping

Diffractive optics for quasi-direct space-to-time pulse shaping

Flat Fresnel doublets made of PMMA and PC: combining low cost production and very high concentration ratio for CPV

Controlled Multibeam Supercontinuum Generation With a Spatial Light Modulator

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