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Transmission characteristics of germanium thin-film-coated metallic hollow waveguides for high-powered CO2 laser light

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5 Author(s)

Various losses such as straight waveguide losses, coupling losses from a CO2 laser, and bending losses are studied. The authors studied the fact that high-powered CO2 laser light could be transmitted through germanium-coated waveguides and investigated beam profiles from straight or bent waveguides. To ascertain the application of the waveguide in wavelengths other than 10.6 μm, the authors investigated the wavelength-dependent losses of the waveguide excited by incoherent IR light. As a result, the thickness of the deposited germanium layer can be very precisely obtained

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Quantum Electronics, IEEE Journal of  (Volume:26 ,  Issue: 9 )