A 30 cm long waveguide made of two specularly reflecting water-cooled brass plates was built for use with a 3 kw CO2 laser beam focused with telescopes having numerical apertures ranging between f/7 and f/150. In order to improve the collection efficiency a V-shaped throat was used as input section. The coupling coefficients of a Gaussian beam were calculated for different illuminations by using simple expressions derived from the uniform asymptotic theory (UAT) of diffraction . Essential to this approach it was to simulate the beam as a wave radiated by a source located at a complex point.
Metallic waveguide systems for collecting, directing, and shaping 3 kw laser beams / Crescenzi, F.; Gay, P.; Cutolo, A.; Pinto, I.; Solimeno, and S.. - 236:(1981), pp. 365-372. [10.1117/12.959038]
Metallic waveguide systems for collecting, directing, and shaping 3 kw laser beams
A. Cutolo;I. Pinto;
1981
Abstract
A 30 cm long waveguide made of two specularly reflecting water-cooled brass plates was built for use with a 3 kw CO2 laser beam focused with telescopes having numerical apertures ranging between f/7 and f/150. In order to improve the collection efficiency a V-shaped throat was used as input section. The coupling coefficients of a Gaussian beam were calculated for different illuminations by using simple expressions derived from the uniform asymptotic theory (UAT) of diffraction . Essential to this approach it was to simulate the beam as a wave radiated by a source located at a complex point.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
