Far field subwavelength focusing using optical eigenmodes

Baumgartl, Jörg; Kosmeier, Sebastian; Mazilu, Michaël; Rogers, Edward T. F.; Zheludev, Nikolay I.; Dholakia, Kishan

doi:10.1063/1.3587636

Cited by 69 publications

(48 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A practical NANOSCOPE imaging apparatus with a resolution of about one sixth of the wavelength has been demonstrated [150], and a wide range of nanotechnologyenabled super-oscillatory lenses have been developed for applications ranging from imaging to data storage and nanofabrication with light [151][152][153][154][155][156]. This includes the deployment of super-oscillatory microscopy for bio-imaging [157] and the development of specialized lenses for the visible and infrared spectral bands made from dielectrics and metals, lenses manufactured on fibre tips and silicon wafers, and achromatic as well as apochromatic lenses [158] operating down to single photon level [159].…”

Section: Developing Technology and Going Internationalmentioning

confidence: 99%

Metamaterials at the University of Southampton and beyond

Zheludev¹

2017

J. Opt.

View full text Add to dashboard Cite

At the University of Southampton, research on metamaterials started in 2000 with a paper describing a metallic microstructure, comprising an ensemble of fully metallic 'molecules'. In the years since then, metamaterials have evolved from an approach for designing unusual electromagnetic properties by structuring matter at the sub-wavelength scale to become a universal paradigm for active functional media with optical properties on demand at any given point in time and space. Metamaterials are now recognized as a promising enabling technology and one of the most buoyant and exciting research disciplines at the crossroads between photonics and nanoscience. Many 'made in Southampton' concepts have influenced the global research community, and we are now working in collaboration with our sister research centre in Nanyang Technological University, Singapore. In this article, I provide a historical overview of the metamaterials research field, from early studies to recent developments through the lens of the Southampton group, and discuss promising future directions.

show abstract

Section: Developing Technology and Going Internationalmentioning

confidence: 99%

Metamaterials at the University of Southampton and beyond

Zheludev¹

2017

J. Opt.

View full text Add to dashboard Cite

show abstract

“…In principle such masks can be generated using liquid crystal spatial light modulators [33,34] and stepper lens system [35]. Naturally, the simplest way to get the super-oscillatory hot-spot is to let its constituent electromagnetic fields propagate backward to a plane and to construct the required field distribution by an appropriate continuous amplitude and phase mask.…”

Section: Solid Immersion Super-oscillatory Optical Needlementioning

confidence: 99%

Flat super-oscillatory lens for heat-assisted magnetic recording with sub-50nm resolution

Yuan¹,

Rogers²,

Roy³

et al. 2014

Opt. Express

Self Cite

View full text Add to dashboard Cite

Heat-assisted magnetic recording (HAMR) is a future roadmap technology to overcome the superparamagnetic limit in high density magnetic recording. Existing HAMR schemes depend on a simultaneous magnetic stimulation and light-induced local heating of the information carrier. To achieve high-density recorded data, near-field plasmonic transducers have been proposed as light concentrators. Here we suggest and investigate in detail an alternative approach exploiting a far-field focusing device that can focus light into sub-50nm hot-spots in the magnetic recording layer using a laser source operating at 473nm. It is based on a recently introduced super-oscillatory flat lens improved with the use of solid immersion, giving an effective numerical aperture as high as 4.17. The proposed solution is robust and easy to integrate with the magnetic recording head thus offering a competitive advantage over plasmonic technology. Sci. Instrum. 71(8), 3111-3117 (2000). 5. X. Zhang and Z. W. Liu, "Superlenses to overcome the diffraction limit," Nat. Mater. 7(6), 435-441 (2008). 6. N. Fang, H. Lee, C. Sun, and X. Zhang, "Sub-diffraction-limited optical imaging with a silver superlens," ©2014 Optical Society of AmericaScience 308

show abstract

“…The spherical aberration was determined using the angular spectral decomposition approach [21]. The optical force was determined directly from the optical eigenmodes of the system [22,23] and calculated using the MATLAB EigenOptics package [24]. More precisely, we calculate the optical momentum transfer for any twoby-two superposition of vector spherical harmonics up to the fiftieth order.…”

Section: The Optomechanics Of a Particle Interacting With Anmentioning

confidence: 99%

Orbital-angular-momentum transfer to optically levitated microparticles in vacuum

et al. 2016

Self Cite

View full text Add to dashboard Cite

We demonstrate the transfer of orbital angular momentum to an optically levitated microparticle in vacuum. The microparticle is placed within a Laguerre-Gaussian beam and orbits the annular beam profile with increasing angular velocity as the air drag coefficient is reduced. We explore the particle dynamics as a function of the topological charge of the levitating beam. Our results reveal that there is a fundamental limit to the OAM that may be transferred to a trapped particle, dependent upon the beam parameters and inertial forces present.

show abstract

Far field subwavelength focusing using optical eigenmodes

Cited by 69 publications

References 23 publications

Metamaterials at the University of Southampton and beyond

Metamaterials at the University of Southampton and beyond

Flat super-oscillatory lens for heat-assisted magnetic recording with sub-50nm resolution

Orbital-angular-momentum transfer to optically levitated microparticles in vacuum

Contact Info

Product

Resources

About