Chalcogenide waveguides on a sapphire substrate for mid-IR applications

Herzog, Amir; Hadad, B.; Lyubin, V.; Klebanov, M.; Reiner, Avraham; Shamir, Avishay; Ishaaya, Amiel A.

doi:10.1364/ol.39.002522

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…They are considered as typical glasses for infrared applications [3,4] and provide good candidates for photo-structural optical recording [5], acousto-optic devices [6,7] and advanced IR optical fibers [8]. They also provide solid-state physicists with new solutions for the challenging fundamental problems that relate to the possible technological applications for these glasses [7,9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of chemical ordering and fragility for Ge–Se–In glasses

et al. 2015

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Decreasing the band gap of a material due to metal impurities has been approved through several studies, and this subject is considered as a major area of interest within the optoelectronic applications. Indium-based chalcogenides have been considered good candidates in nonlinear optics due to their ability to transmit in the infrared region. Hence, Ge 18 Se 82 has been alloyed with In. The nature of the chemical ordering of amorphous samples of Ge 18 Se 82-x In x (x = 0, 2, 4 and 6) have been systematically studied. The aim of present investigation is to understand the role of chemical composition and meancoordination number in determining their structural and physical properties. The compactness, d, of alloyed samples has been calculated from their measured densities, and values obtained have been interpreted using the topological model proposed to describe the atomic arrangements in these alloys. The variation of the glass transition temperature, T g , with the average coordination number, Z, has been investigated. The compositional dependence of the mean atomic volume, V m , has also been determined. The free volume percentage, FVP, in Ge 18 Se 82-x In x amorphous samples and their fragility indices, m, have been determined to examine the relationship with the mean-coordination number. We have also analyzed the obtained results on the basis of average single bond energy and electronegativity.

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Section: Introductionmentioning

confidence: 99%

Analysis of chemical ordering and fragility for Ge–Se–In glasses

et al. 2015

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“…[215] Second, we summarize various waveguide shapes including both the theoretical and experimental structures, and introduce various fabrication methods of these structures. Different structures have been applied in the SCG, such as, the wire waveguide, [101,111,112,114,125,181,212,[216][217][218][219][220][221] buried waveguide, [39,[222][223][224][225] rib waveguide, [173,162,[226][227][228][229][230][231][232] suspended waveguide, [232,233] waveguide being over-etched into the buried oxide, [206] waveguide with buried silicon oxide layer being underetched, [234] waveguide with a round-shaped core at the bottom side, [235,236] and the waveguide with sidewall angle. [214,223,237,238] The dotted box in Figure 3 denotes the waveguide structures used for the SCG modelling only, and the remaining ones are the fabricated structures that have been used in the SCG experiments.…”

Section: Various Types Of Uniform Waveguides For Supercontinuum Gener...mentioning

confidence: 99%

Recent Progress of Supercontinuum Generation in Nanophotonic Waveguides

Fang

Bao

et al. 2022

Laser & Photonics Reviews

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Supercontinuum (SC) has opened up possibilities for numerous applications in optical communications, signal processing, metrology, and spectroscopy. Supercontinuum generation (SCG) in the integrated nonlinear platforms has attracted much interest recently, due to its fundamental advantages in terms of complementary metal oxide semiconductor compatibility, low power consumption, compact size, and cost‐effectiveness. In this paper, the latest progress on various types of nanophotonic waveguides for SCG is reviewed. The material properties of silicon, germanium, silicon–germanium alloy, silicon nitride, silica, chalcogenide, III–V materials, lithium niobate, and other materials, which are used as nonlinear media for SCG are discussed. The wavelength‐dependent nonlinear Kerr index, material, and nonlinear loss of the waveguides are taken into account. This review mainly focuses on the SCG resulting from the cubic χ(3) nonlinearity processes pumped by the femtosecond pulse. The recent representative SCG works based on the integrated optical waveguides are summarized, and further classified according to the dispersion characteristics. Furthermore, different types of spectra broadening mechanisms in details according to the classifications are analyzed. Perspectives on the SC spectral coverage, the realization of various dispersion curves, and the novel materials, which are the key aspects of the SCG in nanophotonic waveguides are provided.

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