Experimental Demonstration of Quantitative Imaging beyond Abbe’s Limit with Optical Diffraction Tomography

Maire, Guillaume; Drsek, Filip; Girard, Jules; Giovannini, Hugues; Talneau, A.; Konan, Denis; Belkebir, Kamal; Chaumet, Patrick C.; Sentenac, Anne

doi:10.1103/physrevlett.102.213905

Cited by 87 publications

(79 citation statements)

References 18 publications

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“…Alternative approaches have been proposed for sub-diffraction-limited imaging utilizing inversion procedures with far-field detection, including time reversal, optical diffraction tomography (ODT) and compressed sensing [65][66][67][68][69][70] . The time-reversal technique was first introduced as an inversion method for electromagnetic waves and was experimentally demonstrated by subwavelength focusing and imaging of microwaves 65,66,[71][72][73][74][75] .…”

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

“…Recently, it has been studied with the goal of breaking the diffraction limit in far-field optical imaging 67,68,[81][82][83] . The resolution is improved by measurements at many incident angles that enlarge the accessible range of spatial frequencies.…”

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

“…The resolution is improved by measurements at many incident angles that enlarge the accessible range of spatial frequencies. The permittivity or shape, intrinsic properties of the object, are then reconstructed numerically by well-developed inversion algorithms that iteratively minimize the discrepancy between the measured scatter field and that simulated via a forward solver 68 . The resolution performance of ODT depends on various factors, including the number of incidences and observation points, covered angular range, inversion algorithms, and system noise level.…”

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

“…The resolution performance of ODT depends on various factors, including the number of incidences and observation points, covered angular range, inversion algorithms, and system noise level. Although a moderate resolution improvement has been demonstrated experimentally 68 , the imaging speed is limited by the need for multiple measurements. Hyperlens for acoustic waves As in the case for electromagnetic waves, the resolution for conventional acoustic imaging is also limited by the wavelength of acoustic waves due to loss of spatial details carried by evanescent waves.…”

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

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Hyperlenses and metalenses for far-field super-resolution imaging

2012

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The resolution of conventional optical lens systems is always hampered by the diffraction limit. Recent developments in artificial metamaterials provide new avenues to build hyperlenses and metalenses that are able to image beyond the diffraction limit. Hyperlenses project super-resolution information to the far field through a magnification mechanism, whereas metalenses not only super-resolve subwavelength details but also enable optical Fourier transforms. Recently, there have been numerous designs for hyperlenses and metalenses, bringing fresh theoretical and experimental advances, though future directions and challenges remain to be overcome.O ptical microscopy has revolutionized many fields such as microelectronics, biology and medicine. However, the resolution of a conventional optical lens system is always limited by diffraction to about half the wavelength of light. This diffraction barrier arises from the fact that subwavelength information from an object is carried by high spatial-frequency evanescent waves, which only exist in the near field. To overcome this diffraction limit, pioneering work has been carried out, including near-field scanning microscopy 1 , as well as fluorescence-based imaging methods 2,3 . These scanning-or random sampling-based nonprojection techniques achieve super-resolving power by sacrificing imaging speed, making them uncompetitive for dynamic imaging.Lens-based projection imaging remains the best option for high-speed microscopy. Immersion techniques have been proposed to enhance resolution, but they are limited by the low refractive indices of natural materials 4 . Emerging within the last decade, the fields of plasmonics and metamaterials provide solutions for engineering extraordinary material properties not found in nature, such as negative index of refraction 5,6 or strongly anisotropic materials 7,8 . This has provided tremendous opportunities for novel lens designs with unprecedented resolution 9 . Initiated by Pendry's seminal concept of the perfect lens 10 , a number of superlenses were demonstrated with resolving powers beyond the diffraction limit [11][12][13][14][15][16][17] . The optical superlens first achieved sub-diffraction-limited resolution by enhancing evanescent waves through a slab of silver 11 . As the evanescent-field enhancement is enabled by surface plasmon excitation, the subwavelength image is typically limited to the near field of the metal slab. However, the hyperlens-a metamaterial-based lens-can send super-resolution images into the far field by introducing a magnification mechanism. This has been considered as one of the most promising candidates for practical applications since its first demonstration in 2007 (refs 13,14). Recently, various other metamaterial-based lenses, that is, metalenses, have also been developed with both

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Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

Section: Extraordinary Imaging Properties Of the Hyperbolic Metalensmentioning

confidence: 99%

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Hyperlenses and metalenses for far-field super-resolution imaging

2012

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“…Far-field optical diffraction tomography (FFODT) removes traditional constraints on resolution such as numerical aperture by utilizing strong coupling between evanescent and propagating waves. Strong coupling is vitally important, and demonstrations to date [9] have been limited by the absence of a theoretical apparatus for the enhancement of evanescent waves.…”

Section: Introductionmentioning

confidence: 99%

Stacked dielectric gratings for sub-wavelength surface field synthesis

et al. 2010

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A method is developed to enhance the amplitudes of the non-propagating evanescent orders of resonant dielectric gratings. The origin of these resonances is analyzed in detail. The method relies on interactions between stacked gratings with different periods, and so a formalism is developed to model such stacks mathematically. In addition, a theoretical approach is developed to design gratings that enhance or blaze desired orders. These orders, controlled independently by incident fields from different angles, interfere and are optimized to produce steerable sub-Rayleigh field concentrations on a surface. These spots may function as a virtual scanning probe for non-invasive sub-Rayleigh microscopy. Optimization is conducted using a Monte Carlo Markov chain, and spots are generated which are both 1 order of magnitude narrower than the free space Rayleigh limit and robust to noise in the incident fields.

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