Chirality and the angular momentum of light

Cameron, Robert P.; Götte, Jörg B.; Barnett, Stephen M.; Yao, Alison M.

doi:10.1098/rsta.2015.0433

Cited by 53 publications

(43 citation statements)

References 97 publications

(229 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A dramatic demonstration of this is provided through the entanglement of OAM [54]. The OAM of light is manifest in the interaction between light and matter and we include two papers covering this aspect of the field: one describing the interaction with atoms [55] and one addressing the interaction with chiral objects, particularly chiral molecules [56]. The study of orbital angular momentum has had an impact beyond the field of optics and an issue devoted to OAM would not be complete without papers looking beyond optics.…”

Section: Recent Developments and This Theme Issuementioning

confidence: 99%

Optical orbital angular momentum

Barnett

Babiker

Padgett

2017

Phil. Trans. R. Soc. A.

Self Cite

117

View full text Add to dashboard Cite

We present a brief introduction to the orbital angular momentum of light, the subject of our theme issue and, in particular, to the developments in the 13 years following the founding paper by Allen et al. (Allen et al. 1992 Phys. Rev. A 45 , 8185 ( doi:10.1103/PhysRevA.45.8185 )). The papers by our invited authors serve to bring the field up to date and suggest where developments may take us next. This article is part of the themed issue ‘Optical orbital angular momentum’.

show abstract

Section: Recent Developments and This Theme Issuementioning

confidence: 99%

Optical orbital angular momentum

Barnett

Babiker

Padgett

2017

Phil. Trans. R. Soc. A.

Self Cite

117

View full text Add to dashboard Cite

show abstract

“…In contrast, natural Rayleigh optical activity has been reported for a handful of large chiral biological structures, including octopus sperm [35], but has thus far proved elusive for small chiral molecules [2], in spite of potential applications such as the robust assignment of absolute configuration [36]. The difficulties here might be partially overcome using structured light [37,38]. Interestingly, orientated achiral molecules can also exhibit natural optical activity via the first-order correction, embodied by the s (1) ξ [2], and partially orientated chiral molecules can exhibit natural optical activity via the zeroth-order theory, embodied by the s (0) ξ [39].…”

Section: General Calculationmentioning

confidence: 98%

“…Illumination by more exotic forms of light could open the door to new possibilities, one example of which is highlighted in section IV. Evanescent fields play important roles in scattering-type near-field optical microscopy techniques [10] and it has recently been shown that illumination by standing waves yields new possibilities for optical activity [37,38], to give two more examples of non-plane-wave illumination in light scattering.…”

Section: General Calculationmentioning

confidence: 99%

Linear Rayleigh and Raman scattering to the second order: Analytical results for light scattering by any scatterer of size k0d≲1/10

Cameron

Mackinnon

2018

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

We extend the usual multipolar theory of linear Rayleigh and Raman scattering to include the second-order correction. The new terms promise a wealth of information about the shape of a scatterer and yet are insensitive to the scatterer's chirality. Our extended theory might prove especially useful for analysing samples in which the scatterers have non-trivial shapes but no chiral preference overall, as the zeroth-order theory offers little information about shape and the first-order correction is often quenched for such samples. A basic estimate suggests that our extended theory can be applied to a scatterer as large as k0d ∼ 1 10 with less than ∼ 0.1% error resulting from the neglect of the third-and higher-order corrections. Our results are entirely analytical.

show abstract

“…The beams with polarization singularities are used in engineering the point spread function for imaging [16] and to enhance the sensitivity in polarimetry methods [17], etc., to name a few [18]. Continuing investigation of optical fields embedded with both type of singularities has initiated new fields of study in optical physics like spin-orbit coupling [19], spin and orbital Hall effect [20,21], chiral light matter interactions [22] to give some examples from a long list.…”

Section: Introductionmentioning

confidence: 99%

Localized geometric phase analogue associated with Poincaré beams due to unfolding of fractional optical vortex beams through a birefringent crystal

Maji¹,

Pattanayak²,

Brundavanam³

2020

J. Opt.

View full text Add to dashboard Cite

Fractional optical vortex beam is generated by the diffraction of a Gaussian beam using computer generated hologram embedded with mixed screw-edge dislocation. Unfolding of the generated fractional vortex beam into eigen-polarization components with orthogonal polarization results in the conversion of scalar phase singularity to vector polarization singularities in the beam cross-section. The evolution of the singularities of the ellipse field namely C-points (points of undefined major axis) and L-lines (lines of undefined handedness) in the state of polarization distribution on a transverse plane quantifies the transformation. The effect of the phase morphology dictated by the fractional order of the dislocation, transverse spatial separation and longitudinal relative phase of the two eigen-polarization components on determining the complex transverse polarization structure is investigated. The nature of the generated Poincaré beam is also indicated by projecting the states of polarization on to the Poincaré sphere. With increasing order of dislocation from 0.0 to 1.0 in fractional steps and with increasing relative phase, the partial Poincaré beam is transformed to a full Poincaré beam. The transformation of the local structure around the C-points is measured through the geometric phase due to the Poincaré sphere contour around the C-points for different dynamic phase difference of the unfolded FOV beams generated from different fractional order of dislocation. This study can be useful for different geometric phase based application of optical vortex beams.

show abstract

Chirality and the angular momentum of light

Cited by 53 publications

References 97 publications

Optical orbital angular momentum

Optical orbital angular momentum

Linear Rayleigh and Raman scattering to the second order: Analytical results for light scattering by any scatterer of size k0d≲1/10

Localized geometric phase analogue associated with Poincaré beams due to unfolding of fractional optical vortex beams through a birefringent crystal

Contact Info

Product

Resources

About