Optical Fibers For Infrared From Vitreous Ge-Sn-Se
CO2 laser radiation (λ = 10.6 μm) plays a very important role in medicine, communication and material processing. The main difficulty in its successful application in medicine and communication, is the lack of good fibers with low attenuation, thermal and chemical stability, good mechanical properties, low toxicity and ease of fabrication. Several potential materials have been investigated. Polycrystalline fibers [1,3] which have been fabricated by extrusion from materials such as KRS-5, KC1, KBr and the silver halides. Other halides like CsI have been used in growing continuous single crystal fibers [4,5]. From a practical point of view glasses rather than crystalline materials are more desirable for long optical fibers. Low toxic flouride glasses can be used in the near infrared region , while chalcogenide glasses are the most promising materials for a wider range of wavelength, near and mid-infrared [7–10]. Although much research on chalcogenide glasses has been done, only limited results are available concerning fiber fabrication and their characteristics [10–14].
KeywordsChalcogenide Glass Silver Halide Infrared Transmission Glass Formation Region Infrared Optical
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