Engineering 1DPC Defect Mode With GRIN Lenses to Design Beam Shapers

Jamshidi‐Ghaleh, Kazem; Bayat, Farzaneh

doi:10.1109/lpt.2013.2295628

Cited by 7 publications

(1 citation statement)

References 27 publications

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“…In our previous works [13][14][15], in terms of enhancing PBG properties, we introduced some laser beam shapes designed by one-dimensional photonic crystal (1DPC) structures. The proposed structures have the capability of modulating the defect mode and output phase and intensity of the incident plane wave by changing the incident beam's frequency and the defect layer's refractive index distribution function.…”

Section: Introductionmentioning

confidence: 99%

Petal-shaped optical vortice generation by a graded-index defective 1DPC nanostructure under irradiation of a Gaussian beam

Jamshidi‐Ghaleh

Bayat

Phirouznia

et al. 2015

J. Opt.

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This paper aims at presenting petal-shaped optical vortices using a one-dimensional photonic crystal nanostructure with a graded-index defect layer under the irradiation of a Gaussian beam. A manufacturable graded-index medium with a spatial refractive index distribution function is introduced into the defect layer. Petal-shaped vortices, which are known as dark traps, with engineerable petal numbers are obtained on the output intensity plane. The transfer matrix method under the incident Gaussian beam is applied to simulate the results. As a potential application, we suggest an optical microparticle-sorting device using the introduced modulated optical vortices. The proposed device can benefit microfluidic and optofluidic lab-on-a-chip devices.

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Section: Introductionmentioning

confidence: 99%

Petal-shaped optical vortice generation by a graded-index defective 1DPC nanostructure under irradiation of a Gaussian beam

Jamshidi‐Ghaleh

Bayat

Phirouznia

et al. 2015

J. Opt.

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Electrically tunable optical bistability based on one-dimensional photonic crystals with nonlinear nanocomposite materials

Moslemi

Jamshidi‐Ghaleh

2016

Journal of Applied Physics

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A one-dimensional photonic crystal structure with a nonlinear metal-dielectric nanocomposite defect layer is proposed to control the optical bistability (OB) of the transmitted wave by tuning the externally applied dc electric field. Using the transfer matrix method for dielectric layers and solving the Helmholtz nonlinear equation in the nonlinear composite layer, the linear transmittance spectrum and the nonlinear transmission curve are illustrated graphically for different applied fields. A field-dependent defect mode is observed in the linear transmittance spectrum. Consequently, the OB switch-up and -down thresholds can be manipulated via the applied field intensity. Due to the field dependence of composite layer refractive index, the physical response of the observation is the dynamical shifting of the defect mode. Moreover, it is shown that the volume fraction, shape, and type of the embedded nanoparticles as well as the kind of the dielectric host have large influences on the OB threshold. The proposed structure has significant potential applications in optical integrated devices.

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A Defective 1-D Photonic Crystal-Based Chemical Sensor in Total Internal Reflection Geometry

et al. 2017

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Engineering 1DPC Defect Mode With GRIN Lenses to Design Beam Shapers

Cited by 7 publications

References 27 publications

Petal-shaped optical vortice generation by a graded-index defective 1DPC nanostructure under irradiation of a Gaussian beam

Petal-shaped optical vortice generation by a graded-index defective 1DPC nanostructure under irradiation of a Gaussian beam

Electrically tunable optical bistability based on one-dimensional photonic crystals with nonlinear nanocomposite materials

A Defective 1-D Photonic Crystal-Based Chemical Sensor in Total Internal Reflection Geometry

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