Waveguides based on Te2As3Se5 thick films for spatial interferometry

Vigreux, Caroline; Ranieri, V.; Labadie, Lucas; Broquin, Jean-Emmanuel; Kern, P.; Pradel, Annie

doi:10.1016/j.jnoncrysol.2006.03.018

Cited by 18 publications

(12 citation statements)

References 16 publications

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“…The refractive index mismatch between the crystal phase(s) and parent glass is small, leading to low loss in the spectral regime of interest. Similar efforts at making IR glass ceramics (composites) have been extensively studied by the researchers at the University of Rennes [23,[86][87][88][89] and others, as part of efforts to create low expansion substrates for optics suitable for use in applications in space as mirror substrates [25,90,91]. However, these composites were largely optimized for thermal and mechanical properties and not for their transmissive characteristics.…”

Section: Composition Morphology and Optical Properties: Glasses Towmentioning

confidence: 99%

New Candidate Multicomponent Chalcogenide Glasses for Supercontinuum Generation

et al. 2018

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Broadband supercontinuum (SC) generation requires host material attributes defined by both optical and physical properties and the material’s manufacturability. We review and define the trade-offs in these attributes as applied to fiber or planar film applications based on homogeneous glass property data, and provide a series of examples of how one might optimize such attributes through material compositional and morphology design. As an example, we highlight the role of varying composition, microstructure, and linear/nonlinear optical properties, such as transmittance, refractive index, and the multiphoton absorption coefficient, for a series of novel multicomponent chalcogenide glasses within a model GeSe2-As2Se3-PbSe (GAP-Se) system. We report key optical property variation as a function of composition and form, and discuss how such glasses, suitable for both fiber and planar film processing, could lend themselves as candidates for use in SC generation. We demonstrate the impact of starting glass composition and morphology and illustrate how tailoring composition and form (bulk versus film) leads to significant variation in linear, nonlinear, and dispersive optical property behavior within this system that enables design options that are attractive to optimization of desirable SC performance, based on optical composites.

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Section: Composition Morphology and Optical Properties: Glasses Towmentioning

confidence: 99%

New Candidate Multicomponent Chalcogenide Glasses for Supercontinuum Generation

et al. 2018

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“…in the windows of visible and telecommunications. In this research, the use of amorphous chalcogenide thin films is advantageous because of the fundamental properties associated with this class of inorganic materials: transmission from visible to far infrared (IR), 1,2 low‐energy phonons, 3–5 photoinduced phenomena, 6,7 high linear‐, 8,9 and nonlinear refractive indices 6,10–12 . Currently, slab and rib/ridge waveguides are also of great interest for the development of integrated optical devices for transmission and emission in the IR spectral region.…”

Section: Introductionmentioning

confidence: 99%

Sputtering and Pulsed Laser Deposition for Near- and Mid-Infrared Applications: A Comparative Study of Ge25Sb10S65 and Ge25Sb10Se65 Amorphous Thin Films

Nazabal

Charpentier

Adam

et al. 2011

International Journal of Applied Ceramic Technology

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International audienceThe deposition of Ge25Sb10S65 and Ge25Sb10Se65 amorphous chalcogenide thin films was performed by radio-frequency magnetron sputtering and pulsed laser deposition technique. The deposited layers were characterized by studying their morphology, topography, chemical composition, structure, and optical functions permitting a direct comparison of two deposition methods for obtaining attractive amorphous chalcogenide films. Reactive ion etching was then used to pattern rib/ridge waveguides in sulfide and selenide films with low surface roughness, vertical sidewalls, and reasonable etching rate. Optical losses of fabricated waveguides were measured at 1550 nm with values better than 1 dB/cm obtained for sulfide/selenide films deposited by both techniques

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“…Two types of processes were tested to etch the obtained films: physical etching in an argon atmosphere and reactive ion etching in a CF 4 /O 2 atmosphere [11]. The first method allowed obtaining ribs with heights up to 2.7 microns, i.e.…”

Section: Textmentioning

confidence: 99%

“…A value of 2.821±0.005 for the refractive index of the films at λ = 10.6 µm was measured thanks to m-lines measurements [13]. Note that the refractive index of the commercial As 2 S 3 glass used as a substrate is 2.38 at λ = 10.6 µm.Two types of processes were tested to etch the obtained films: physical etching in an argon atmosphere and reactive ion etching in a CF 4 /O 2 atmosphere [11]. The first method allowed obtaining ribs with heights up to 2.7 microns, i.e.…”

mentioning

confidence: 99%

Transmission measurement at 10.6μm of Te2As3Se5 rib waveguides on As2S3 substrate

Vigreux

Bonhomme

Pradel

et al. 2007

Applied Physics Letters

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The feasibility of chalcogenide rib waveguides working at λ = 10.6µm has been demonstrated. The waveguides comprised a several microns thick Te 2 As 3 Se 5 film deposited by thermal evaporation on a polished As 2 S 3 glass substrate and further etched by physical etching in Ar or CF 4 /O 2 atmosphere. Output images at 10.6µm and some propagation losses roughly estimated at 10dB/cm proved that the obtained structures behaved as channel waveguides with a good lateral confinement of the light. The work opens the doors to the realisation of components able to work in the mid and thermal infrared up to 20 µm and even more. TextThe development of single-mode integrated optics components being able to work in the whole range from 1 to 20 microns is of major interest for specific applications related to detection in the mid and thermal-infrared spectral domain : the detection and identification of pollutant gases for environmental control or the direct detection of exoplanetary systems (ESA Darwin Mission [1]), for example. To date, single-mode integrated optics is limited to the near infrared windows H [1.50 -1.80 µm] and K [2.01 -2.42 µm] due to the silica transmission window. One of the promising possibilities to extend the integrated optics concept to the mid-infrared is to use chalcogenide glasses which transparency in the infrared is well-known. Some channel waveguides mainly based on arsenic sulphide As 2 S 3 or arsenic selenide As 2 Se 3 were already realised [2, 3 for example]. In reference [2], rib waveguides made by a physical or reactive ion etching of As 2 S 3 were optically characterised at λ = 1.5 microns. In reference [3] channel waveguides were obtained by direct laser writing of the As 2 Se 3 core layer deposited on an As 2 S 3 cladding layer and were characterised at λ = 8.5 microns. In both examples, the substrates were crystalline silicon substrates (Si/SiO 2 ) and the working domain of the structures was limited at 12 microns, due to the opacity of As 2 S 3 at longer wavelengths. In order to extend the working domain of such waveguides, the only way is the replacement of the sulphide and selenide films by telluride ones. The number of papers dealing with telluride glasses in bulk form has been growing up in the past few years [6-8] but 2 only a few of them concern films [8][9][10]. Moreover in previous works on telluride films, the film thickness was lower than 1 micron [8][9][10] while the film thickness will have to be typically from 4 to 15 microns for use in the mid-IR. In fact, the further the waveguides will be used in the IR, the thicker the film will have to be. For similar reasons, the films will have to be etched on variable depths, typically from 1 to 10 microns. These dimensions (film thickness and rib depth) are much bigger than the ones usually used for the telecommunication wavelengths and previous tests to reach such characteristics are scarce in the literature [2;11].The present work was dedicated to demonstrate the feasibility of channel waveguides based on telluride films...

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Waveguides based on Te2As3Se5 thick films for spatial interferometry

Cited by 18 publications

References 16 publications

New Candidate Multicomponent Chalcogenide Glasses for Supercontinuum Generation

New Candidate Multicomponent Chalcogenide Glasses for Supercontinuum Generation

Sputtering and Pulsed Laser Deposition for Near- and Mid-Infrared Applications: A Comparative Study of Ge25Sb10S65 and Ge25Sb10Se65 Amorphous Thin Films

Transmission measurement at 10.6μm of Te2As3Se5 rib waveguides on As2S3 substrate

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