Photonic Crystal at Millimeter Waves Applications

Fernandes, Heloísa; Medeiros, J.L.G.; Isnaldo, M. A.; Brito, Davi Bibiano

doi:10.2529/piers060901105337

Cited by 17 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The characteristics of photonic crystals make it possible to control the light propagation direction and realize light confinement in the vertical cavity surface of the laser [33]. Further, it can generate greater light intensity in regions with nonlinear optical characteristics, and it can be expected that the difference frequency can generate terahertz waves more effectively.…”

Section: Design Of the Square Lattice Photonic Crystal Structurementioning

confidence: 99%

Improvement of Optical Confinement for Terahertz Vertical-Cavity Surface-Emitting Laser with Square-Lattice Photonic Crystal Structure

et al. 2023

View full text Add to dashboard Cite

A new method proposed to enhance the optical confinement of the terahertz band in a vertical cavity surface emitting laser involves introducing a square-lattice photonic crystal structure. This structure’s filling factor was optimized by computing the energy band structure and optical band values of the photonic crystal. The optimal optical band value is 0.436–0.528 a/λ. At a specific carrier concentration, the real part of dielectric constant of GaAs/AlGaAs materials will gradually increase with the increase of Al elements. By adjusting the length of the resonant cavity, a vertical cavity surface emitting laser with two wavelengths can be created without utilizing current injection. Additionally, the photonic crystal structure’s control effect on the transverse mode of the vertical cavity surface emitting laser and the release effect of the PN junction light confinement were analyzed. Numerical calculations indicated that incorporating a cubic photonic crystal structure in the vertical cavity surface emitting laser resulted in a 2× increase in the difference frequency intensity and a 6.33× increase in the optical field intensity.

show abstract

Section: Design Of the Square Lattice Photonic Crystal Structurementioning

confidence: 99%

Improvement of Optical Confinement for Terahertz Vertical-Cavity Surface-Emitting Laser with Square-Lattice Photonic Crystal Structure

et al. 2023

View full text Add to dashboard Cite

show abstract

“…A distinctive feature of microwave photonic crystals is the ability to provide various functions necessary for the operation of microwave circuits [23][24][25][26] with a relatively small number of elements that make up a photonic crystal. A small number of elements forming microwave photonic crystals is associated with the need for compactness of the devices created on their basis.…”

Section: Microwave Photonic Crystals: Structures With Forbidden Bandsmentioning

confidence: 99%

Photonic Crystal Wave guides

2008

The Essence of Dielectric Waveguides

View full text Add to dashboard Cite

The original results of theoretical and experimental studies and the properties of microwave one-dimensional waveguide photonic crystals have been generalized. Methods for describing the electrodynamic characteristics of photonic crystals and their relationship with the parameters of periodic structures filling the waveguides have been presented. The results of an investigation on the characteristics of microwave waveguide photonic crystals made in the form of dielectric matrices with air inclusions have been presented. The model of effective dielectric permittivity has been proposed for describing the characteristics of the investigated photonic crystals containing layers with a large number of air inclusions. New types of microwave low-dimensional waveguide photonic crystals containing periodically alternating elements that are sources of higher type waves have been described. The possibility of effective control of the amplitude-frequency characteristics of microwave photonic crystals by means of electric and magnetic fields has been analyzed. Examples of new applications of waveguide photonic crystals in the microwave range have been given: the measuring parameters of the materials and semiconductor nanostructures that play the role of the microwave photonic crystals' periodicity defect; the resonators of near-field microwave microscopes; small-sized matched loads for centimeter and millimeter wavelength ranges on the basis of microwave photonic crystals.

show abstract

“…One of the factors that have stimulated much of the recent interest in diffractive optics at any frequency waveband has been the increased optical performance of such optical elements and millimeter wave/microwave devices [1][2][3]. This allows the fabrication of optical elements that are smaller (compared to wavelength), lighter and cheaper to fabricate, are more rugged and have superior performance that the conventional optical or/and quasioptical components they often replace.…”

Section: Introductionmentioning

confidence: 99%

Subwavelength Diffractive Photonic Crystal Lens

Minin

Kotlyar

et al. 2008

2008 China-Japan Joint Microwave Conference

View full text Add to dashboard Cite

Abstract-We designed two type binary 2D subwavelength (wavelength was λ = 10 mm) focus diffractive photonic crystal lens and calculated the diffraction of plane TE-wave by use FDTD-method (our program in C++). It has been shown that diffractive photonic crystal lens designs have not an unique solution. Diameter lens was in 5 times more than her width and full width half maximum diameter of focal spot was 0.48λ.

show abstract

Photonic Crystal at Millimeter Waves Applications

Cited by 17 publications

References 6 publications

Improvement of Optical Confinement for Terahertz Vertical-Cavity Surface-Emitting Laser with Square-Lattice Photonic Crystal Structure

Improvement of Optical Confinement for Terahertz Vertical-Cavity Surface-Emitting Laser with Square-Lattice Photonic Crystal Structure

Photonic Crystal Wave guides

Subwavelength Diffractive Photonic Crystal Lens

Contact Info

Product

Resources

About