Nonlinear interaction of intense hypergeometric Gaussian subfamily laser beams in plasma

Sobhani, Hassan; Vaziri, Manouchehr; Rooholamininejad, Hosein; Bahrampour, Abbas

doi:10.1016/j.optlastec.2016.01.026

Cited by 21 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2009; Sobhani et al. 2016 c , d ), one may define the perfect phase matching condition as . In the presence of this ripple wavenumber, the effect of the relative Gouy phases of the input lasers is removed and perfect phase matching is achieved.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effective factors on twisted terahertz radiation generation in a rippled plasma

2017

View full text Add to dashboard Cite

Based on the beating of two Laguerre–Gaussian laser beams in a rippled plasma medium, the effective factors such as plasma density, Gouy phase and orbital angular momentums of input lasers on the output twisted terahertz radiation are investigated. As a result, the amplitude of the generated vortex terahertz radiation is an increasing function of plasma density. The vortex terahertz intensity is strongly dependent on the orbital angular momentum of the input lasers. The terahertz output amplitude increases by decreasing the orbital angular momentum of the Laguerre–Gaussian input lasers. Here, by employing a suitably ripple wavenumber, the destroyer effect of the relative Gouy phase of the input lasers is removed, and perfect phase matching is satisfied.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This electron density distribution can be produced by different sources of energy (Kaur, Sharma & Salih 2009; Sobhani et al. 2016 c , d ). The -component of (2.7) can be deduced as where is the permittivity of the plasma medium at the THz frequency .…”

Section: Theoretical Analysismentioning

confidence: 99%

Effective factors on twisted terahertz radiation generation in a rippled plasma

2017

View full text Add to dashboard Cite

show abstract

“…For biosensor applications, the use of the proposed CRR sensor may allow the detection of small biomolecules. Furthermore, owing to non-ionizing characteristics and high penetrating power of terahertz (THz) waves, the THz generation is of great interest (Sobhani et al , 2016b; Sobhani et al , 2016a; Sobhani et al , 2016c; Sobhani, 2017a; Sobhani et al , 2016d; Sobhani et al , 2017a; Sobhani et al , 2017b; Sobhani et al , 2017c; Sobhani, 2017b; Sobhani, 2017c; Sobhani et al , 2018a; Sobhani et al , 2018b; Sobhani and Zohrabi, 2018). We are currently investigating the designing of a high-sensitivity sensor in the THz domain which is based on reflection-type MRRs.…”

Section: Discussionmentioning

confidence: 99%

Design and analysis of all optical biochemical sensors based on the coupled-ring reflectors

Feili

Sabouhi

Sobhani

et al. 2019

View full text Add to dashboard Cite

Purpose This study aims to propose a new scheme for designing a high-sensitivity optical biosensor. For this, two agents have been considered: reflection-type micro-resonators, which filter the noise of the pump, and coupled-ring reflectors (CRRs), which are coupled to partial reflecting elements in the bus waveguide to create Fano-resonance. These two agents improve the sensor sensitivity and have low-power optical switching/modulation. Design/methodology/approach The proposed model is based on the coupling of the CRRs with the Fabry–Pérot cavity. The slope of the Fano-resonance line shape and consequently the sensitivity of the proposed CRRs are higher than those of conventional microring resonators. Findings The proposed scheme has many characteristics: CRRs have been used to create a higher slope of the Fano-resonance line shape; the sensitivity of the sensor shows improvement on the basis of reflection-type micro-resonators and by the removal of the pump noise; the designed sensor has low-power optical switching/modulation; and the modeling and designing of a novel high-sensitivity resonator is based on coupling the CRRs with the Fabry–Pérot cavity. Originality/value This study has proposed a new scheme for designing a high-sensitivity optical biosensor. This method is based on the improvement of the sensitivity by two agents: reflection-type micro-resonators, which filter the noise of the pump, and coupled-ring reflectors, which are coupled to partial reflecting elements in the bus waveguide to create Fano-resonance.

show abstract

“…, where e m k T 8 , where n 00 and n 0 are the electron density in the absence and presence of the MW electric field, respectively [8,27]. The dielectric permittivity varies as a function of the sum of electric fields of TE 10 and TE 20 modes, which is con-…”

Section: Device Modeling and Analysismentioning

confidence: 99%

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

Sobhani

Sabouhi

Feili

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

Here a new scheme for mode filtering is proposed. Based on the ponderomotive force effect, propagation of the microwave dual-mode through a plasma-filled metallic rectangular waveguide is investigated. To excite the TE 20 mode in a rectangular waveguide, the existence of fundamental modes is unavoidable. To filter the destructive mode (TE 10), the waveguide is filled with a collisional plasma. Based on the coupling effect, the energy of this destructive TE 10 mode is transferred to the TE 20 mode. The proposed structure acts like a mode convertor. The TE 10 mode become more attenuated and instead the TE 20 mode is amplified. The plasma filled rectangular waveguide acts as a mode filtering tool.

show abstract

Nonlinear interaction of intense hypergeometric Gaussian subfamily laser beams in plasma

Cited by 21 publications

References 28 publications

Effective factors on twisted terahertz radiation generation in a rippled plasma

Effective factors on twisted terahertz radiation generation in a rippled plasma

Design and analysis of all optical biochemical sensors based on the coupled-ring reflectors

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

Contact Info

Product

Resources

About