Tunable terahertz wave Goos–Hänchen shift of reflected terahertz wave from prism–metal–polymer–metal multilayer structure

Li, Jiusheng; Wu, Jian; Zhang, Le

doi:10.1016/j.optcom.2014.08.016

Cited by 16 publications

(5 citation statements)

References 14 publications

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“…The investigations showed that the GH effect might have potential applications in optical sensors [6][7][8][9] optical switching [10], detection of chemical vapors [11], polarizers [12], lasers [13], filters [14] and integrated optics [15]. The major positive and negative GH shifts for both transmitted and reflected beams were reported in the multilayer structures [16][17][18][19], photonic crystals [20][21][22], lefthanded materials [23][24][25][26], antiferromagnet [27], metamaterials [28,29], nonabsorbent or absorbing media [30][31][32], photonic-magnonic crystals [33]. The tunability and switching properties of the lateral shift are very significant in the application of the GH effect and have been investigated extensively by several researchers.…”

Section: Introductionmentioning

confidence: 98%

Electrically controlled lateral shift of the reflected optical beams from a nanocomposite structurally chiral medium

Shirin¹,

Madani²,

Entezar³

2020

Phys. Scr.

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In this paper, we theoretically investigate the influence of an external electric field on the lateral shifts of the reflected right-handed circularly polarized beam from a nanocomposite slab at the edge wavelengths of the photonic bandgaps of the structure. The nanocomposite slab is a non-dissipative dielectric chiral material with the randomly dispersed silver nanoparticles inside it. We show that the increase of the applied electric field results in the decrease of the positive lateral shift at the lower edge of the Bragg gap, while the negative lateral shift at the upper edge of the Bragg gap increases by increasing the applied field. Moreover, we show that the impact of the applied voltage is more noticeable at larger incident angles for both the lower and upper edge wavelengths of the Bragg gap. Also, it is shown that the tilt angle of the chiral structure and the slab thickness have considerable effects on the controlling behavior of the externally applied voltage. Finally, we investigate the effect of the filling fraction of nanoparticles and show that the inclusion of the nanoparticles can change the influence of the applied voltage on the lateral shift of the reflected beams.

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Section: Introductionmentioning

confidence: 98%

Electrically controlled lateral shift of the reflected optical beams from a nanocomposite structurally chiral medium

Shirin¹,

Madani²,

Entezar³

2020

Phys. Scr.

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“…The GH changes may help nano optics and accurate measurement [15,16]. There has been a lot of research on GH changes based on multiple processes [17][18][19][20][21]. There has been a lot of research on the amplification of negative and positive GH shifts in reflected and transmitted light beams from * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Phase control of optical Goos–Hänchen shifts in a quantum dot nanostructure via high refractive index

Raheli¹,

Abdulkareem²,

Al-Qargholi³

2022

Laser Phys.

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We proposed a model for adjusting Goos–Hänchen (GH) shifts in a cavity with quantum dot (QD) nanostructure in this letter. The actual component of the susceptibility was studied by analytical solution of the coherence term of the density matrix elements, and the refractive index of the QD nanostructure was explored. We discovered that the intracavity medium became phase sensitive because of the electron tunneling action. As a result, the relative phase of applied lights may be used to manipulate the medium’s refraction index. The GH shifts in reflected and transmitted light beams in high refractive index QD nanostructures with diminishing probe absorption were next examined. We discovered that the GH shifts of reflected and transmitted lights are greatly influenced by the applied lights’ relative phase. We established that greater negative or positive GH shifts in reflected and transmitted photons are conceivable in the presence of electron tunneling.

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“…Yan et al [34] investigated the negative and positive lateral shift of a light beam through a gain medium near resonance. For instance, Li et al [35] studied manipulation of the GH shift for a terahertz light from a prism-metal-polymermetal interface by external voltage bias. Qing et al [36], and Hu et al [37] extensively studied the lateral shift at an interface between positive and negative refractive media.…”

Section: Introductionmentioning

confidence: 99%

Birefringent lateral Goos-Hänchen effect through chiral medium

et al. 2020

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Birefringence of lateral Goos-Hänchen (GH) shift in reflection and transmission beams are investigated through four level chiral atomic medium. Significant positive and negative shifts in reflection and transmission birefringence beams are reported under the strength of driving fields. At resonance point, positive birefringent shifts of 2.8λ and 2λ are noted in reflection beams. The birefringence lateral GH-shift in transmission beams show contrast behaviors of −2λ and −2.8λ at resonance point. A 30% fractional change in birefringent reflection and transmission beams with GH-shift are investigated. These results will play a vital role in the modification of optical heterodyne sensors technology, cloaking devices, image coding, integrated optical technologies and telecom industry.

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Tunable terahertz wave Goos–Hänchen shift of reflected terahertz wave from prism–metal–polymer–metal multilayer structure

Cited by 16 publications

References 14 publications

Electrically controlled lateral shift of the reflected optical beams from a nanocomposite structurally chiral medium

Electrically controlled lateral shift of the reflected optical beams from a nanocomposite structurally chiral medium

Phase control of optical Goos–Hänchen shifts in a quantum dot nanostructure via high refractive index

Birefringent lateral Goos-Hänchen effect through chiral medium

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