Propagation dynamics of optical vortices

Rozas, D.; Law, C. T.; Swartzlander, Grover A.

doi:10.1364/josab.14.003054

Cited by 387 publications

(226 citation statements)

References 65 publications

Supporting

Mentioning

222

Contrasting

Order By: Relevance

“…This anomaly forces the intensity to vanish by a total destructive interference, creating a dark core. This dark core propagates and is conserved along the optical axis [8,9]. Whether a dark core is created in the pupil or focal plane of a telescope will determine the way it further evolves.…”

Section: Introductionmentioning

confidence: 99%

Optical Vectorial Vortex Coronagraphs using Liquid Crystal Polymers: theory, manufacturing and laboratory demonstration

et al. 2009

View full text Add to dashboard Cite

Abstract:In this paper, after briefly reviewing the theory of vectorial vortices, we describe our technological approach to generating the necessary phase helix, and report results obtained with the first optical vectorial vortex coronagraph (OVVC) in the laboratory. To implement the geometrical phase ramp, we make use of Liquid Crystal Polymers (LCP), which we believe to be the most efficient technological path to quickly synthesize optical vectorial vortices of virtually any topological charge. With the first prototype device of topological charge 2, a maximum peak-to-peak attenuation of 1.4 × 10 −2 and a residual light level of 3 × 10 −5 at an angular separation of 3.5 λ /d (at which point our current noise floor is reached) have been obtained at a wavelength of 1.55 μm. These results demonstrate the validity of using space-variant birefringence distributions to generate a new family of coronagraphs usable in natural unpolarized light, opening a path to high performance coronagraphs that are achromatic and have low-sensitivity to low-order wavefront aberrations.

show abstract

Section: Introductionmentioning

confidence: 99%

Optical Vectorial Vortex Coronagraphs using Liquid Crystal Polymers: theory, manufacturing and laboratory demonstration

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Thus, we note that the field of singular optics is a rapidly expanding one, both as a science for understanding the properties of beams creating these fields, as well as in engineering to apply this understanding. It has been previously shown [27] that the optical vortices in an interference field translate in both time and space due to an interplay of three factors, the amplitude gradient, phase gradient and intensity gradient. However, these motions have not yet been correlated to the dynamics of the physical systems which caused the interference.…”

Section: Introductionmentioning

confidence: 99%

Statistical studies on optical vortices in dynamic speckle fields

Majumdar

Kirkpatrick

2018

J-BPE

View full text Add to dashboard Cite

Abstract. New parameters to statistically describe and differentiate between different decorrelation behaviors in dynamic speckle fields are described. These decorrelation behaviors are surrogate descriptors of the dynamics of the underlying processes in object space being observed. The statistical parameters are based on the temporal variations in the location of optical vortices in the speckle fields. The length and number of optical vortex trails, motion of the vortices in the plane of observation and the distance between the mean locations of the positive and negative vortices are investigated. The implementation of the statistical analysis presents new methods to quantify and describe biophysical dynamics.

show abstract

“…The transverse velocity of an optical vortex soliton (OVS) has a radial and an angular component arising from the transverse phase and intensity gradients, respectively [13,14]. Two practical ways to control the vortex rotation have their origin in the Guoy phase shift on both sides of the background beam waist [14,15] and in the interaction of ordered structures of OVSs [16] controlled by the topological charges. OVS steering is demonstrated by superposition of a weak incoherent background field [17].…”

Section: Introductionmentioning

confidence: 99%

Directional coupling of optical signals by odd dark beams with mixed phase dislocations

et al. 2001

View full text Add to dashboard Cite

Numerical simulations on the evolution of step-screw and edge-screw optical phase dislocations in bulk saturable self-defocusing nonlinear media are presented, with emphasis on their ability to induce steering waveguides for signal beams (pulses). Two schemes for directional coupling of such signals, both ensuring reasonable coupling-to-cross-talk efficiency ratio, are investigated. The parameters useful for performance optimization of the couplers are discussed.

show abstract

Propagation dynamics of optical vortices

Cited by 387 publications

References 65 publications

Optical Vectorial Vortex Coronagraphs using Liquid Crystal Polymers: theory, manufacturing and laboratory demonstration

Optical Vectorial Vortex Coronagraphs using Liquid Crystal Polymers: theory, manufacturing and laboratory demonstration

Statistical studies on optical vortices in dynamic speckle fields

Directional coupling of optical signals by odd dark beams with mixed phase dislocations

Contact Info

Product

Resources

About