&lt;title&gt;The role of plasmon-polaritons and waveguide modes in surface modification of semiconductors by ultrashort laser pulses&lt;/title&gt;

Martsinovsky, George A.; Shandybina, G. D.; Smirnov, D. S.; Zabotnov, S. V.; Golovan, L. A.; Timoshenko, V. Yu.; Кашкаров, П. К.

doi:10.1117/12.786844

Cited by 6 publications

(1 citation statement)

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“…The absorption can be linear or multiple, resulting in many nonequilibrium electrons; then, considering the diffusion effect, electron-electron collisions occur and there is an energy exchange between the photon-excited electrons and the non-equilibrium electrons. The evolution in time of the free-electron density generated by excited photons and electron-electron collisions is [22]: Figure 11. Two-channel plasmonic waveguide filter structure.…”

Section: Plasmonic Waveguide Filters For Increased Data Rate Transmismentioning

confidence: 99%

Mathematical Analysis of Electrical Breakdown Effects in Waveguides

Medina¹,

Calva²

2018

Emerging Waveguide Technology

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The designers of microwave devices in the industry use the analytical solutions of the corona discharge equation to determine the minimum power breakdown threshold, in a particular device, such as waveguides and filters, and know whether it is in the established margins. There are two main ways to determine the breakdown threshold of a waveguide analytically; the most commonly used describes the plasma density generation completely as a function of the geometry by using the characteristic diffusion length, while the second is a more thorough method that involves the use of the effective diffusion length which considers collision frequency and electric field into the equations. Hence the aim of the designers is to obtain the closest results to experimental results, both methods must be considered in addition to the environmental changes so that they know the operational limits. This chapter describes the different methods to obtain analytical results for the breakdown threshold in any rectangular waveguide device, the influence of environmental conditions in the analysis and the inhomogeneous electric field effect inside the devices.

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Section: Plasmonic Waveguide Filters For Increased Data Rate Transmismentioning

confidence: 99%

Mathematical Analysis of Electrical Breakdown Effects in Waveguides

Medina¹,

Calva²

2018

Emerging Waveguide Technology

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Power Breakdown Threshold of a Plasmonic Waveguide Filter

Calva

Medina

2014

Plasmonics

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Laser-ablated silicon nanoparticles: optical properties and perspectives in optical coherence tomography

et al. 2015

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Due to their biocompatibility silicon nanoparticles have high potential in biomedical applications, especially in optical diagnostics. In this paper we analyze properties of the silicon nanoparticles formed via laser ablation in water and study the possibility of their application as contrasting agents in optical coherence tomography (OCT). The nanoparticles suspension was produced by picosecond laser irradiation of monocrystalline silicon wafers in water. According to transmission electron microcopy analysis the silicon nanoparticles in the obtained suspension vary in size from 2 to 200 nm while concentration of the particles is estimated as 10 13 cm −3 . The optical properties of the suspension in the range from 400 to 1000 nm were studied by spectrophotometry measurements revealing a scattering coefficient of about 0.1 mm −1 and a scattering anisotropy factor in the range of 0.2-0.4. In OCT study a system with a central wavelength of 910 nm was employed. Potential of the silicon nanoparticles as a contrasting agent for OCT is studied in experiments with agarose gel phantoms. Topical application of the nanoparticles suspension allowed the obtaining of the contrast of structural features of phantom up to 14 dB in the OCT image.

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<title>The role of plasmon-polaritons and waveguide modes in surface modification of semiconductors by ultrashort laser pulses</title>

Cited by 6 publications

References 0 publications

Mathematical Analysis of Electrical Breakdown Effects in Waveguides

Mathematical Analysis of Electrical Breakdown Effects in Waveguides

Power Breakdown Threshold of a Plasmonic Waveguide Filter

Laser-ablated silicon nanoparticles: optical properties and perspectives in optical coherence tomography

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