I Dunn et al 1993 J. Phys. D: Appl. Phys. 26 1138 doi:10.1088/0022-3727/26/7/022
I Dunn, P M Bridger and W W Duley
Show affiliationsThe authors have observed the transmission of CW CO2 laser radiation through liquid H2O at intensities I<or=2.5*106 Watts cm-2 that are sufficient to produce vaporization. Under these conditions, a focused CO2 laser beam propagates inside a self-induced hollow channel similar to a waveguide with a diameter comparable to the focal spot diameter at the surface of the liquid. The attenuation coefficient for 10.6 mu m laser radiation has been found to be about 7 cm-1, which is compatible with that calculated for propagation in a hollow waveguide in liquid water. The stability of this structure is discussed.
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation
Issue 7 (14 July 1993)
I Dunn et al 1993 J. Phys. D: Appl. Phys. 26 1138
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