Title :
Transmission characteristics of germanium thin-film-coated metallic hollow waveguides for high-powered CO2 laser light
Author :
Hongo, Akihito ; Morosawa, Ken-ichi ; Shiota, Tsuneo ; Matsuura, Yuji ; Miyagi, Mitsunobu
Author_Institution :
Hitachi Cable Ltd., Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
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
Keywords :
carbon compounds; elemental semiconductors; germanium; laser beams; optical losses; optical waveguides; semiconductor thin films; 10.6 micron; CO2; Ge coating; beam profiles; bending losses; bent waveguides; coating thickness determination; coupling losses; high-powered CO2 laser light; incoherent IR light; optical losses; straight waveguide losses; straight waveguides; thin-film-coated metallic hollow waveguides; waveguide laser beam transmission; wavelength-dependent losses; Fiber lasers; Germanium; Hollow waveguides; Laser beam cutting; Laser beams; Nickel; Optical fibers; Optical waveguides; Silver; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
