Chalcogenide glass fibers for mid-infrared transmission

Kanamori, T.; Terunuma, Y.; Takahashi, Shiro; Miyashita, Tadashi

doi:10.1109/jlt.1984.1073657

Cited by 146 publications

(69 citation statements)

References 24 publications

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“…Thin films of ChGs are usually deposited by vacuum based deposition techniques, such as vacuum thermal evaporation, sputtering or laser ablation [1][2][3][4][5][6][7][8][9]. Thin films deposited by these techniques usually have significantly more disordered structure in comparison with those of source bulk ChG often resulting in photosensitivity of thin films [10,11]. Deposition of thin films is relatively expensive due to the necessity of high vacuum equipment.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of spin-coated Ge_25S_75 chalcogenide thin films

Šlang

Janíček

Pálka

2016

Opt. Mater. Express

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Amorphous chalcogenide thin films of Ge25S75 composition have been deposited by spin-coating technique. Optical properties of thin films were investigated by spectroscopic ellipsometry in UV-MIR spectral range. Obtained results prove increase of thin films refractive index in the transparent region and decrease of their thickness with increasing annealing temperature implying densification of the glass structure. Short wavelength absorption edge is shifting to lower energies (red shift) with increasing annealing temperature. Decreasing organic molecules content with increasing temperature of annealing was observed in MIR part of extinction coefficient and verified by Raman spectroscopy and EDS. Raman spectra also gave evidence of thermo-induced structural polymerization and decomposition of organic salts molecules yielding thin films with structure similar to the structure of the source bulk glass.

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Section: Introductionmentioning

confidence: 99%

Structure and properties of spin-coated Ge_25S_75 chalcogenide thin films

Šlang

Janíček

Pálka

2016

Opt. Mater. Express

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“…Chalcogenide glasses have drawn great interest for their high refractive index, low-loss in mid-infrared, a wide range of photo-induced phenomena, and optical nonlinearities [1][2][3]. They are ideal candidates for various applications in infrared optics, such as lenses, all-optical switching, and laser written waveguides [4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of annealing conditions on the optical and structural properties of spin-coated As_2S_3 chalcogenide glass thin films

Song¹,

Dua²,

Arnold³

2010

Opt. Express

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Spin-coating of chalcogenide glass is a low-cost, scalable method to create optical grade thin films, which are ideal for visible and infrared applications. In this paper, we study the influence of annealing on optical parameters of As 2 S 3 films by examining UV-visible and infrared spectroscopy and correlating the results to changes in the physical properties associated with solvent removal. Evaporation of excess solvent results in a more highly coordinated, denser glass network with higher index and lower absorption. Depending on the annealing temperature and time, index values ranging from n = 2.1 to the bulk value (n = 2.4) can be obtained, enabling a pathway to materials optimization. 275-284 (1987). 19. S. Shtutina, M. Klebanov, S. R. V. Lyubin, and V. Volterra, "Photoinduced phenomena in spin-coated vitreous As2S3 and AsSe films," Thin Solid Films 261(1-2), 263-265 (1995). 20. J. Tauc, "Absorption edge and internal electric fields in amorphous semiconductors," Mater. Res. Bull. 5(8), 721-729 (1970). 21. R. Swanepoel, "Determination of the thickness and optical constans of amorphous silicon," J. Phys. E 16(12), 1214-1222 (1983). 22. E. Marquez, J. Ramirez-Malo, P. Villarest, R. Jimenez-Garay, P. J. S. Ewen, and A. E. Owen, "Calculation of the thickness and optical constants of amorphous arsenic sulfide films from their transmission spectra," J. Phys. D Appl. Phys. 25(3), 535-541 (1992). 23. S. Wemple, and M. DiDomenico, "Behavior of electronic dielectric constant in covalent and ionic materials,"Phys. Rev. B 3(4), 1338-1351 (1971). 24. S. Wemple, "Refractive-index behavior of amorphous semiconductors and glasses," Phys. Rev. B 7(8), 3767-3777 (1973).

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“…The capillaries are drawn from a glass preform by using a double crucible glass drawing technique [4,5], and thus, a long fiber is easily produced. The wall thickness of the glass capillary is properly designed and controlled during drawing and we are able to produce capillaries with different wall thickness, starting from 130 µm ( Fig.1 (a)) and up to 12 µm ( Fig.1(b)).…”

Section: Introductionmentioning

confidence: 99%

Thin chalcogenide capillaries as efficient waveguides from mid-infrared to terahertz

et al. 2012

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We present chalcogenide glass As 2 Se 3 capillaries as efficient waveguides in the mid-IR and THz spectral ranges. The capillaries are fabricated using a double crucible glass drawing technique. The wall thickness of the glass capillary is properly designed and controlled during drawing, and we are able to produce capillaries with different wall thickness, starting from 12 µm and up to 130 µm. Such capillaries show low loss properties in the whole target wavelength region. In the mid-IR range guidance is governed by Fresnel reflection and antiguidance mechanisms (ARROWs), while in the THz spectral range thin walls capillaries guide via total internal reflection.

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Chalcogenide glass fibers for mid-infrared transmission

Cited by 146 publications

References 24 publications

Structure and properties of spin-coated Ge_25S_75 chalcogenide thin films

Structure and properties of spin-coated Ge_25S_75 chalcogenide thin films

Influence of annealing conditions on the optical and structural properties of spin-coated As_2S_3 chalcogenide glass thin films

Thin chalcogenide capillaries as efficient waveguides from mid-infrared to terahertz

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