Q-plates micro-arrays for parallel processing of the photon orbital angular momentum

Loussert, Charles; Kushnir, Kateryna; Brasselet, Étienne

doi:10.1063/1.4895706

Cited by 30 publications

(18 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The system has huge advantages compared with previous systems because its self-organization offers highly tunable structures that do not require special surface modifications. The structure can be used directly for diffractive microlens arrays, generation of multiple vortex beams using LC mesophases366162636465 as foreseen applications. Because our system is self-repairing, it could be applied for sensor applications using director distortion.…”

Section: Discussionmentioning

confidence: 99%

Large-scale self-organization of reconfigurable topological defect networks in nematic liquid crystals

et al. 2016

View full text Add to dashboard Cite

Topological defects in nematic liquid crystals are ubiquitous. The defects are important in understanding the fundamental properties of the systems, as well as in practical applications, such as colloidal self-assembly, optical vortex generation and templates for molecular self-assembly. Usually, spatially and temporally stable defects require geometrical frustration imposed by surfaces; otherwise, the system relaxes because of the high cost of the elastic energy. So far, multiple defects are kept in bulk nematic liquid crystals by top-down lithographic techniques. In this work, we stabilize a large number of umbilical defects by doping with an ionic impurity. This method does not require pre-patterned surfaces. We demonstrate that molecular reorientation controlled by an AC voltage induces periodic density modulation of ions accumulated at an electrically insulating polymer interface, resulting in self-organization of a two-dimensional square array of umbilical defects that is reconfigurable and tunable.

show abstract

Section: Discussionmentioning

confidence: 99%

Large-scale self-organization of reconfigurable topological defect networks in nematic liquid crystals

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Based on the vortex induction process, the realization of programmable lattices of optical vortices with arbitrary distributions in space has been demonstrated [46]. Vortex lattices can also be obtained with other liquid-crystal systems, as confined cholesterics [47,48], smectic cells [49][50][51], nematics driven by segmented electrodes [52], and nematics driven by magnetic fields [53].…”

Section: Generation Of Optical Vorticesmentioning

confidence: 99%

Optical vortex induction via light–matter interaction in liquid-crystal media

et al. 2015

View full text Add to dashboard Cite

“…Finally, the arrangement of large numbers of q-plate devices in sequence or in transverse arrays, or both, may further expand the range of application possibilities, introducing entirely new ways of controlling light propagation and evolution. The first examples of such devices are already promising in this sense [39,51,116,117].…”

Section: Resultsmentioning

confidence: 99%