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Small-bore hollow waveguide for delivery of near singlemode IR laser radiation

Small-bore hollow waveguide for delivery of near singlemode IR laser radiation

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Published

A hollow waveguide whose bore size is 250 µm in diameter is fabricated by depositing a dielectric and a metal layer inside a thin-wall silica tube. This small bore waveguide has an advantage over the larger bore guides in that it maintains a nearly pure HE11 mode of a CO2 laser even when it is bent to small radii.

Inspec keywords: circular waveguides; laser accessories; gas lasers; optical workshop techniques; optical waveguides

Other keywords: 250 micron; small bore waveguide; thin-wall silica tube; hollow waveguide; dielectric layer; near singlemode IR laser radiation; nearly pure HE11 mode; metal layer; CO2

Subjects: CO<sub>2</sub> lasers; Optical waveguides; Optical fabrication, surface grinding; Optical waveguides and couplers; Gas lasers; Laser accessories and instrumentation

References

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      • T. Abel , J. Hirsch , J.A. Harrington . Hollow glass waveguides for broadband infrared transmission. Opt. Lett. , 1034 - 1036
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      • N. Croitoru , J. Dror , I. Gannot . Characterization of hollow fibers for the transmission of infrared radiation. Appl. Opt. , 1805 - 1809
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      • I. Gannot , J. Dror , A. Inberg , N. Croitoru . Optical characterization of flexible plastic hollow waveguides for CO2laser delivery. Proc. Soc. Photo-Opt. Intrum. Eng. , 66 - 73
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